Chemistry 2

14) Which element has a variable charge? A) Na B) Fe C) Al D) C

B) Fe

43) How many total valence electrons does the polyatomic ion OBr- possess? A) 11 B) 12 C) 13 D) 14 E) 15

D) 14

27) Which bond is the MOST polar? A) C-N B) C-O C) C-C D) C-Cl E) C-F

E) C-F

57) Atoms with three valence electrons generally form five bonds. True or False

False

98) The chemical formula for phosphorus pentachloride is ________.

PCl5

98) The electron configuration of the oxide ion is ________.

1s22s22p6

95) In the Lewis structure of a molecule, oxygen atoms typically have ________ lone pair(s) of electrons.

2

8) Which of the statements concerning chemical bonds is false? A) The sharing of electrons between two nonmetal atoms results in a covalent bond. B) The attraction between oppositely charged ions results in an ionic bond. C) The term nonpolar is used to describe a covalent bond in which electrons are not shared equally. D) A bond dipole is the separation of charge that results when atoms sharing electrons have different electronegativities.

C) The term nonpolar is used to describe a covalent bond in which electrons are not shared equally.

) What is the molecular shape around the oxygen atom in the structure shown below? A) linear B) bent C) trigonal planar D) tetrahedral E) trigonal pyramidal

B) bent

35) What is the molecular shape around the nitrogen atom in the structure shown below? A) linear B) bent C) trigonal planar D) tetrahedral E) trigonal pyramidal

B) bent

31) Which bond has the polarity incorrectly labeled? A) δ+ H-Cl δ- B) δ+ O-C δ- C) δ+ Cl-F δ- D) δ- Cl-Br δ+ E) δ- F-O δ+

B) δ+ O-C δ-

52) The covalent bond between chlorine and iodine is a polar one. Which of the following properly represents the direction of polarity in this bond? A) δ+ Cl-I δ- B) δ- Cl-I δ+ C) + Cl-I - D) - Cl-I +

B) δ- Cl-I δ+

96) The chemical formula for iron (III) bicarbonate is ________.

Fe(HCO3)3

97) The formula for the ammonium ion is ________.

NH4+

Dibromomethane (CH2Br2) is a nonpolar molecule. True or False

false

55) A Lewis structure shows the connectivity between atoms in a molecule, as well as where all the bonding and nonbonding valence electrons reside. True or False

True

56) Bonding is the joining of two atoms in a stable arrangement. True or False

True

57) Atoms with three valence electrons generally form five bonds. True or False

True

57) Bonding is the joining of two atoms in a stable arrangement. True or False

True

58) Atoms with seven valence electrons typically form one covalent bond. True or False

True

61) A double bond consists of four electrons shared between two atoms. True or False

True

61) Ionic compounds have very high melting points compared to covalent compounds. True or False

True

62) The Lewis structure for BH3 contains an atom that does not follow the octet rule. True or False

True

64) Resonance structures for a substance differ only in the location of multiple bonds and the position of lone electron pairs. True or False

True

67) The symbol for the nitrite ion is NO2-. True or False

True

69) Unequal sharing of electrons in a covalent bond results in a polar bond. True or False

True

70) Nonpolar molecules may contain polar bonds. True or False

True

71) Some covalent compounds are solids, some are liquids, and some are gases at room temperature. True or False

True

72) C-H bonds are considered to be nonpolar, because the electronegativity difference between carbon and hydrogen is small. True or False

True

73) The symbol δ- is given to the more electronegative atom in a polar bond. True or False

True

76) In the valence shell electron pair repulsion (VSEPR) theory, a group is defined as an atom or a lone pair of electrons. True or False

True

77) A molecule that contains only one polar bond is a polar molecule. True or False

True

79) A resonance hybrid is a composite of all resonance structures that spreads out electron pairs in multiple bonds and lone pairs. True or False

True

84) An iodide ion has 53 protons and 54 electrons. True or False

True

85) Strontium and barium form ions with the same charge. True or False

True

88) The formula for stannic fluoride is SnF4. True or False

True

91) The molecular shape around the boron atom in BCl3 is different than the molecular shape around the nitrogen atom in NCl3. True or False

True

100) To represent the three-dimensional geometry of a tetrahedron on a two-dimensional piece of paper, a solid line is used for the two bonds in the plane of the paper; a ________ is used to show a bond that extends in front of the plane; and a ________ is used to show a bond that extends behind the plane.

wedge; dashed line

44) Which compound has the highest melting point? A) KCl B) CH4 C) C6H12O6 D) H2O

A) KCl

1) Which is NOT an ionic compound? A) KCl B) Ca(NO3)2 C) CBr4 D) AlBr3

C) CBr4

19) What is the formula for the ionic compound lithium oxide? A) LiO B) LiO2 C) Li2O D) Li2O2

C) Li2O

2) Which is NOT a covalent compound? A) Br2 B) NO2 C) NH3 D) NaNO2 E) More than one of the compounds is not a covalent compound.

D) NaNO2

40) Which group of the Periodic Table does not typically form ions? A) Group 1A B) Group 2A C) Group 6A D) Group 7A E) Group 8A

E) Group 8A

54) Neutral atoms always contain an equal number of protons, neutrons, and electrons. True or False

False

94) The electrons in the outermost occupied shell of an atom are called the ________ electrons.

octet

53) The Lewis structure of formaldehyde is shown below. Which statement concerning this structure is INCORRECT? A) Two electrons are being shared between the carbon atom and the oxygen atom. B) The oxygen atom has four valence electrons that are not being shared with another atom. C) The oxygen and carbon atoms each have an octet of electrons in their valence shells. D) The hydrogen atoms have filled valence shells.

A) Two electrons are being shared between the carbon atom and the oxygen atom.

16) Identify the correct name for the compound NO2. A) Nitrogen oxide B) Dinitrogen monoxide C) Nitrogen dioxide D) Nitrogen oxate E) Nitrate

B) Dinitrogen monoxide

30) What is the correct chemical formula of selenium dioxide? A) SO2 B) SeO2 C) Se2O D) OS2

B) SeO2

6) What is the electron configuration of an F- ion? A) 1s22s22p4 B) 1s22s22p5 C) 1s22s22p6 D) 1s22s22p63s1

C) 1s22s22p6

9) How many covalent bonds are generally formed by atoms with five valence electrons? A) 1 B) 2 C) 3 D) 4 E) 5

C) 3

29) Aspartic acid is an amino acid used to synthesize proteins. How many polar bonds are in the aspartic acid structure shown below? A) 4 B) 6 C) 9 D) 12 E) 15

C) 9

50) Which statement concerning chemical bonds is FALSE? A) A covalent bond involves the sharing of electrons between two nonmetal atoms. B) An ionic bond is the attraction between oppositely charged ions. C) A nonpolar bond is a covalent bond in which electrons are not shared equally between the atoms. D) Electronegativity is a measure of the attraction an atom has for the electrons it shares in a bond.

C) A nonpolar bond is a covalent bond in which electrons are not shared equally between the atoms

49) Which of the statements concerning compounds is INCORRECT? A) Compounds are formed when atoms of two or more different elements are chemically bonded. B) Ionic compounds are composed of cations and anions. C) Covalent compounds are composed of metals and nonmetals. D) Covalent compounds are composed of individual molecules.

C) Covalent compounds are composed of metals and nonmetals.

38) Which molecule or ion has ONLY two resonance structures to describe its bonding? A) CO32- B) NO3- C) HCO31- D) SO3

C) HCO31-

5) Which of the following compounds is classified as covalent? A) KCl B) LiBr C) HCl D) NaBr E) None of the choices are correct.

C) HCl

99) Carbon tetrachloride has ________ valence electrons. A) 4 (four) B) 8 (eight) C) 24 (twenty-four) D) 32 (thirty-two) E) 40 (forty)

D) 32 (thirty-two)

45) How many lone pairs of electrons need to be added to the Lewis structure of carbonic acid shown below? A) 0 B) 3 C) 4 D) 6 E) 7

D) 6

22) Aspartic acid is an amino acid used to synthesize proteins. How many lone pairs of electrons need to be added to complete the aspartic acid structure shown below? A) 4 B) 6 C) 8 D) 9 E) 11

D) 9

23) Which of the following molecule(s) is(are) polar? A) CO2 B) CH4 C) CBr4 D) CHBr3 E) More than one of the molecules are polar.

D) CHBr3

25) Rank the atoms Br, Cl, and F in order of increasing electronegativity. A) F < Br < Cl B) Cl < Br < F C) Br < Cl < F D) F < Cl < Br E) Cl < F < Br

D) F < Cl < Br

7) What is another name for an unshared pair of electrons in a covalent compound? A) Lone pair of electrons B) Nonbonded electron pair C) Bonding pair of electrons D) Lone pair of electrons or nonbonded electron pair

D) Lone pair of electrons or nonbonded electron pair

54) A molecule is a discrete group of atoms held together by covalent bonds. True or False

True

94) Electronegativity ________ down a column of the periodic table as the atomic radius increases.

decreases

100) In bonding, main group elements gain, lose, or share electrons to attain the ________ of the nearest noble gas neighbor to them in the periodic table.

electron configuration

99) The Ca2+ ion contains ________ protons. A) 20 B) 18 C) 22 D) 40 E) 2

A) 20

42) How many total valence electrons does the polyatomic ion NH4+ possess? A) 8 B) 9 C) 10 D) 11 E) 7

A) 8

93) In general, a ________ bond will be one in which the electronegativity difference between two atoms is 0.5 units or greater.

polar

101) Carbon usually forms four bonds in stable molecules. However unstable carbon compounds with less than four bonds are known. The methyl carbanion shown below is an example. The molecular shape around the carbon atom in this structure is ________.

trigonal pyramidal

94) The electrons in the outermost occupied shell of an atom are called the ________ electrons.

valence

3) Identify the diatomic element from the given choices. A) Chlorine B) Carbon C) Boron D) Sulfur E) Lithium

A) Chlorine

24) Rank the atoms Br, Cl, and K in order of increasing electronegativity. A) K < Br < Cl B) Cl < Br < K C) Br < Cl < K D) K < Cl < Br E) Cl < K < Br

A) K < Br < Cl

17) Which choice would be named dinitrogen pentoxide? A) N2O5 B) N5O2 C) N3O2 D) N2O3 E) NO

A) N2O5

12) How many lone pairs of electrons are present in the Lewis structure of ammonia, NH3? A) 0 B) 1 C) 2 D) 3 E) 4

B) 1

34) Estimate the bond angles around the sulfur atom in the structure shown below. A) 90° B) 109.5° C) 120° D) 180°

B) 109.5°

15) How many valence electrons are in a molecule of formaldehyde (CH2O)? A) 16 B) 12 C) 10 D) 8 E) 0

B) 12

19) Predict the bond angles around the carbon atom in the structure of carbonic acid shown below. Don't forget to draw in lone pairs where needed to give octets. A) 180° B) 120° C) 109.5° D) 90° E) 60°

B) 120°

10) How many covalent bonds are generally formed by an oxygen atom? A) 1 B) 2 C) 3 D) 4 E) 5

B) 2

96) Aspartic acid is an amino acid used to synthesize proteins. There are ________ atoms with a trigonal planar geometry in the aspartic acid structure shown here. A) 1 B) 2 C) 3 D) 4 E) 5

B) 2

13) How many nonbonded electron pairs are in the Lewis structure below? (CO2) A) 2 B) 4 C) 6 D) 8 E) 16

B) 4

40) Which molecule's Lewis structure contains an atom that violates the octet rule? A) H2O B) BeH2 C) PCl3 D) H2Se

B) BeH2

21) What are the bond angles in a tetrahedral geometry? A) 180° B) 120° C) 109.5° D) 90° E) 60°

C) 109.5°

28) Which bond is the LEAST polar? A) C-N B) C-O C) C-C D) C-Cl E) C-F

C) C-C

18) Which choice would be named carbon tetrachloride? A) CCl B) C4Cl C) CCl4 D) CCl3 E) C3Cl

C) CCl4

11) Which of the following elements will generally form only one covalent bond? A) Sulfur B) Carbon C) Hydrogen D) Argon E) Nitrogen

C) Hydrogen

32) What is the chemical formula for dinitrogen tetroxide? A) N4O2 B) O4N2 C) N2O4 D) O2N4 E) NO2

C) N2O4

4) Identify the diatomic element from the given choices. A) Phosphorus B) Helium C) Nitrogen D) Silicon E) Sodium

C) Nitrogen

6) Which of the following compounds is not classified as covalent? A) CH4 B) SF6 C) PBr3 D) MgCl2 E) None of the choices are correct.

D) MgCl2

37) Which element may have more than eight valence electrons around it when present in a covalent compound? A) C B) B C) N D) P E) O

D) P

26) Which atom has the lowest electronegativity? A) Al B) S C) Se D) Rb E) F

D) Rb

41) Which compound has the greatest number of valence electrons? A) H2S B) CH4 C) NH3 D) H2O E) All of the molecules have the same number of valence electrons.

E) All of the molecules have the same number of valence electrons.

39) Which of the following is classified as a group in the valence shell electron pair repulsion (VSEPR) theory? A) An atom B) A lone pair of electrons C) A valence electron D) Either an atom or a valence electron E) Either an atom or a lone pair of electrons

E) Either an atom or a lone pair of electrons

1) Covalent bonds result from the ________ electrons between two atoms. A) transfer of B) equal sharing of C) unequal sharing of D) Transfer of, equal sharing of, and unequal sharing of are correct. E) Equal sharing of and unequal sharing of are correct.

E) Equal sharing of and unequal sharing of are correct.

2) A diatomic molecule contains ________. I. atoms of two different elements bonded together with a covalent bond II. two atoms of the same element bonded together with a covalent bond III. two lone pairs of electrons A) I only B) II only C) III only D) I or II only E) I and III only

E) I and III only

44) Which atom(s) in the structure below has(have) a partial negative charge (δ-)? A) Carbon B) Fluorine C) Hydrogen D) Nitrogen E) Nitrogen and fluorine

E) Nitrogen and fluorine

20) What is the molecular shape around the phosphorus atom in PH3? A) Linear B) Bent C) Trigonal planar D) Tetrahedral E) Trigonal pyramidal

E) Trigonal pyramidal

59) Every atom must have an octet of electrons in order for a Lewis structure to be considered valid. True or False

False

60) Phosphorus usually forms two covalent bonds in a molecule. True or False

False

63) The Lewis structure for PH3 contains an atom that does not follow the octet rule. True or False

False

65) There can be a no more than two resonance structures for a molecule. True or False

False

66) The correct name for SF6 is sulfur heptafluoride. True or False

False

67) The formula for dinitrogen pentoxide is N5O2. True or False

False

68) A bond formed between the elements hydrogen and bromine would be considered an ionic bond. True or False

False

78) Ethane (C2H6) is a polar molecule. True or False

False

82) Double bonds and triple bonds are never polar bonds. True or False

False

83) A N-O bond is more polar than a P-O bond. True or False

False

88) A double bond is counted as two groups in the valence shell electron pair repulsion (VSEPR) theory. True or False

False

92) In Lewis structures, fluorine atoms generally do not obey the octet rule.

False

5) Which statement concerning the ion Li+ is correct? A) Li+ has two total electrons. B) Li+ has an octet of electrons in its valence shell. C) Li+ is formed when a lithium atom gains one electron. D) Li+ is formed when a lithium atom gains one proton.

A) Li+ has two total electrons.

38) What is the correct formula for the ionic compound formed from the cation X3+ and the anion Y2- that results in zero overall charge? A) X2Y3 B) X2Y C) X3Y2 D) XY3

A) X2Y3

39) If atoms with the electron-dot symbols shown below are combined, what is the formula of the ionic compound that is formed? ( x 2 dots, y 6 dots) A) XY B) X2Y C) XY2 D) X2Y2 E) X3Y2

A) XY

45) What is the charge on the chromium ion in the ionic compound CrCl3? A) +6 B) +3 C) -3 D) -6 E) Not enough information is given to determine the charge.

B) +3

22) What is the formula for the ionic compound formed when aluminum and sulfur combine? A) AlS B) Al2S3 C) AlS3 D) Al2S E) Al3S2

B) Al2S3

41) What period 4 element forms an ion with a -1 charge? A) Sulfur B) Bromine C) Iodine D) Rubidium E) Potassium

B) Bromine

7) What is the ion symbol for an atom with twenty (20) protons and eighteen (18) electrons? A) Ca B) Ca2+ C) Ar D) Ar2+ E) Ar2-

B) Ca2+

26) What is the chemical formula for the ionic compound calcium selenide? A) Ca2Se2 B) CaSe C) CaSe2 D) Ca2Se

B) CaSe

30) Which roman numeral correctly completes the name of the compound CrO? A) Chromium (I) oxide B) Chromium (II) oxide C) Chromium (III) oxide D) Chromium (IV) oxide

B) Chromium (II) oxide

23) What is the proper name for CuCl? A) Copper chloride B) Copper (I) chloride C) Copper (II) chloride D) Copper monochloride

B) Copper (I) chloride

48) What is the formula for chromous cyanide? A) CrCN B) Cr(CN)2 C) Cr(CN)3 D) Cr2CN

B) Cr(CN)2

18) What is the formula for the ionic compound formed when potassium and bromine combine? A) PBr B) KBr C) KBr2 D) K2Br E) K7Br

B) KBr

46) What is the formula for the ionic compound formed from the lead (II) ion and the carbonate ion? A) Pb(CO3)2 B) PbCO3 C) Pb2CO3 D) PbCO4

B) PbCO3

25) What is the name of the SO42- ion? A) Sulfide ion B) Sulfate ion C) Sulfite ion D) Bisulfate ion

B) Sulfate ion

16) Consider the B atom and the B+ ion. Which will have the larger radius (size)? A) The B+ ion B) The B atom C) They will both have identical radii D) Impossible to determine

B) The B atom

36) If atoms with the electron-dot symbols shown below are combined, what is the formula of the ionic compound that is formed? (x 1 dot, y 6 dots) A) XY B) X2Y C) XY2 D) X2Y2 E) X3Y2

B) X2Y

31) The formula for zinc acetate is ________. A) ZnCH3CO2 B) Zn(CH3CO2)2 C) Zn(HCO3)2 D) Zn(HCl)8

B) Zn(CH3CO2)2

28) What is the charge on the iron ion in the compound Fe2O3? A) +1 B) +2 C) +3 D) +4

C) +3

12) What is the charge of the ions formed by group 7A elements? A) +1 B) +7 C) -1 D) -7

C) -1

10) How many protons and electrons are present in Co2+? A) 27 protons, 27 electrons B) 27 protons, 29 electrons C) 27 protons, 25 electrons D) 29 protons, 27 electrons

C) 27 protons, 25 electrons

17) Which pair of elements will form an ionic compound? A) Sulfur and oxygen B) Copper and iron C) Iron and chlorine D) Bromine and oxygen

C) Iron and chlorine

33) Which chemical formula is correct? A) Ag(CH3CO2)2 B) K2CN C) Mg(OH)2 D) MgHCO3 E) More than one of the formulas is correct.

C) Mg(OH)2

11) What is the symbol for the ion formed by magnesium? A) Mg2- B) Mg3+ C) Mg2+ D) Mg4-

C) Mg2+

27) What is the chemical formula of tin (IV) cyanide? A) Sn4CN B) SnCN4 C) Sn(CN)4 D) SnC4N4

C) Sn(CN)4

37) What is the correct formula for the ionic compound formed from the cation X2+ and the anion Y- that results in zero overall charge? A) X2Y B) XY C) XY2 D) X2Y2

C) XY2

47) The correct name for AuI3 is ________. A) silver iodide B) gold iodide C) gold (III) iodide D) gold iodide (III)

C) gold (III) iodide

43) The correct name for Ag2O is ________. A) silver (II) oxide B) silver (I) oxide C) silver oxide D) disilver oxide

C) silver oxide

20) Which statement best explains the basis for the octet rule? A) Atoms are most stable when they have eight bonds. B) Atoms lose, gain, or share electrons to become a stable, noble gas. C) Atoms are most stable with eight protons in their nucleus. D) Atoms are most stable with eight electrons in their valence shell and the electron configuration of a noble gas.

D) Atoms are most stable with eight electrons in their valence shell and the electron configuration of a noble gas.

8) When forming ions, metals typically do which of the following? A) Lose electrons to form negatively charged ions B) Gain protons to form cations C) Gain electrons to form anions D) Lose electrons to form positively charged ions

D) Lose electrons to form positively charged ions

49) The diphosphate ion is a biologically important polyatomic ion. If the ionic compound calcium diphosphate has the formula Ca2P2O7, which correctly represents the ion symbol of the diphosphate ion? A) P2O72- B) PO4- C) 2 PO46- D) P2O74-

D) P2O74-

3) In bonding, main group elements ________ to attain the electronic configuration of the noble gas closest to them in the periodic table. A) gain electrons B) lose electrons C) share electrons D) gain, lose, or share electrons

D) gain, lose, or share electrons

63) An ionic compound is a pure substance formed by chemically combining two or more nonmetal atoms together. True or False

False

72) Sodium nitrate and sodium nitrite are two acceptable names for the same compound. True or False

False

79) All polyatomic ions are anions. True or False

False

83) An iron (III) ion has 29 protons and 26 electrons. True or False

False

The ion symbol for the ferric ion is Fe2+. True or False

False

50) Anions are formed when a neutral atom gains one or more electrons. True or False

True

51) Cations are smaller in size than the atoms from which they are formed. True or False

True

62) All ionic compounds are soluble in water. True or False

True

65) The name of an anion usually ends in the -ide if it is derived from a single atom or -ate (or -ite) if it is polyatomic. True or False

True

69) Elements in group 2A form ions with a +2 charge. True or False

True

70) Ionic compounds are usually solids at room temperature. True or False

True

71) The formula for copper (II) hydroxide is Cu(OH)2. True or False

True

87) In crystal of an ionic compound, the cations are surrounded by anions so that the charges of the ions are balanced. True or False

True

89) The chemical formulas of ionic compounds are written with the cation first, and then the anion, with subscripts to show how many of each are needed to have zero net charge. True or False

True

93) Ionic bonds form between a metal on the ________ side of the periodic table and a nonmetal on the ________ side.

left , right

4) ________ are negatively charged ions that have ________ electrons than protons. A) Anions; more B) Cations; more C) Anions; less D) Cations; less

A) Anions; more

24) What is the proper name for MgF2? A) Magnesium fluoride B) Magnesium (I) fluoride C) Magnesium (II) fluoride D) Magnesium difluoride

A) Magnesium fluoride

21) What is the formula for the ionic compound formed when magnesium and oxygen combine? A) MgO B) MgO2 C) Mg2O D) Mg2O2

A) MgO

32) Which chemical formula is NOT correct? A) Na2HCO3 B) NaNO3 C) Na2HPO4 D) Na2SO3 E) More than one of the formulas is not correct.

A) Na2HCO3

13) What is the ion symbol of the oxide ion? A) O2- B) O22- C) O2 D) O2+ E) O6-

A) O2-

9) What is the ion symbol for an atom with sixteen (16) protons and eighteen (18) electrons? A) S2- B) S C) Ar D) Ar2+ E) Ar2-

A) S2-

15) Consider the A atom and the A2- ion. Which will have the larger radius (size)? A) The A2- ion B) The A atom C) They will both have identical radii D) Impossible to determine

A) The A2- ion

29) What is the charge on the nickel ion in the compound NiCl2? A) +1 B) +2 C) +3 D) +4

B) +2

34) An atom has the electron-dot symbol shown below. If this atom is a main group element, what charge will it form in its ionic state? ( x 3 dots) A) -1 B) +3 C) -5 D) -3

B) +3

56) Ionic compounds are composed of positively and negatively charged ions held together by strong electrostatic forces. True or False

True

73) Sodium bicarbonate and sodium hydrogen carbonate are two acceptable names for the same compound. True or False

True

77) If the main group element has an electron-dot symbol of (x 2 dots) , the charge of the resulting ion will be +2. True or False

True

78) If the main group element has an electron-dot symbol of (Z 6 dots) , the charge of the resulting ion will be -2. True or False

True

79) All polyatomic ions are anions. True or False

True

Potassium sulfide has the chemical formula K2S. True or False

True

51) Cations are smaller in size than the atoms from which they are formed. True or False

False

53) The (II) in the name of the ionic compound lead (II) acetate specifically indicates that there are two lead ions present in the compound. True or False

False

55) Ionic compounds are composed of individual molecules, discrete groups of atoms that share electrons. True or False

False

58) Ionic bonds result from the sharing of electrons between two atoms. True or False

False

59) A cation is positively charged, and has more electrons than the neutral atom. True or False

False

60) The ionic formula for zinc oxide is ZnO2. True or False

False

62) All ionic compounds are soluble in water. True or False

False

64) A polyatomic ion is an ion that forms more than one charge. True or False

False

66) The correct name for CaHPO4 is calcium phosphate. True or False

False

68) The noble gas that has the same electronic configuration as the iodide ion is krypton. True or False

False

74) The sulfite ion contains more oxygen atoms than the sulfate ion. True or False

False

75) The carbonate ion contains the same number of oxygen atoms as the sulfate ion. True or False

False

76) The electron configuration for the sulfide ion is 1s22s22p63s23p64s2. True or False

False

79) All p block elements form ions. True or False

False

90) A main group element is especially stable when it possesses eight total electrons. True or False

False

91) When magnesium forms an ion it gains two electrons. True or False

False

92) When forming an ion, an atom with the electron-dot symbol of ( X 3 dots) forms an anion with a -3 charge by the loss of three electrons.

False

42) What is the name of the compound (NH4)2SO4? A) Ammonium sulfide B) Ammonia sulfate C) Ammonia sulfoxide D) Ammonium sulfate E) Diammonium sulfate

D) Ammonium sulfate