multiple choice question (new) bonding
A substance that has a melting point of 1074 K conducts electricity when dissolved in water, but does not conduct electricity in the solid phase. The substance is most likely a. an ionic solid b. a metallic solid c. a network solid d. a molecular solid
a
A substance was found to be a soft, nonconducting solid at room temperature. The substance is most likely a. a molecular solid b. a metallic solid c. a network solid d. an ionic solid
a
A white crystalline salt conducts electricity when it is melted and when it is dissolved in water. Which type of bond does this salt contain? a. ionic b. covalent c. metallic d. network
a
Atoms of which element have the weakest attraction for electrons? a. Na b. Si c. P d. S
a
The Lewis structure for the polyatomic ion NO 2⁺ contains a)2 double bonds and 8 nonbonding electrons. b)1 double bond, 1 single bond, and 12 nonbonding electrons. c)2 single bonds and 12 nonbonding electrons. d)2 triple bonds and 4 nonbonding electrons.
a
The correct name for the compound H₂S is a) hydrogen sulfide. b) dihydrogen sulfide. c) dihydrogen monosulfide. d) hydrogen monosulfide.
a
The total number of non bonding electron pairs present in the Lewis structure of CH₄ is a)zero. b)one. c)two. d)four
a
Which of the following is a molecular compound that contains 5 atoms per molecule? a)silicon tetrachloride b)disulfur monoxide c)dinitrogen pentoxide d)carbon dioxide
a
Which of the following molecular compounds would have a Lewis structure thatcontains 10 electron dots?a)HCN b)H₂O c)NH₃ d)CO₂
a
Which of the following sets of elements is arranged in order of decreasing electronegativity? a)Cl, S, Se b)F, B, O c)Br, Cl, S d)Be, C, N
a
Which type of bond is found in a molecule of methane? a. a covalent bond b. an ionic bond c. a hydrogen bond d. a metallic bond
a
Based on bond type, which compound has the highest melting point? a. CH₃OH b. CaCl₂ c. C₆H₁₄ d. CCl₄
b
Hydrogen bonds are formed between molecules when hydrogen is covalently bonded to an element that has a a. small atomic radius and low electronegativity b. small atomic radius and high electronegativity c. large atomic radius and low electronegativity d. large atomic radius and high electronegativity
b
If the electronegativity difference between two atoms X and Z is 1.0, the bond between the two atoms would be a)ionic. b)polar covalent. c)coordinate covalent. d)more than one correct response
b
In a nonpolar covalent bond, electrons are a. located in a mobile "sea" shared by many ions b. shared equally by two atoms c. transferred from one atom to another d. shared unequally by two atoms
b
Which substance contains bonds that involved the transfer of electrons from one atom to another? a. CO₂ b. KBr c. NH₃ d. Cl₂
b
Which type of bond is found in sodium bromide? a. covalent b. ionic c. hydrogen d. metallic
b
As two chlorine atoms combine to form a molecule, energy is a. absorbed b. created c. released d. destroyed
c
For which of the following pairs of elements would the compound formed between them most likely be a molecular compound? a)Na and Cl b)Ca and O c)N and S d)K and F
c
In which of the following molecular compounds are all the bonds single bonds? a)CO₂ b)CO c)NH₃ d)N₂
c
Metallic bonding occurs between atoms of a. sulfur b. fluorine c. copper d. carbon
c
The kind of attractions that result in the dissolving of sodium chloride in water are a. ion-ion b. atom-atom c. molecule-ion d. molecule-atom
c
Which elements combine by forming an ionic bond? a. sodium and potassium b. carbon and oxygen c. sodium and oxygen d. carbon and sulfur
c
Which molecule contains a triple covalent bond? a. H₂ b. O₂ c. N₂ d. Cl₂
c
Which of the following compounds contains both ionic and covalent bonds? a)SO₂ b)NaCl c)KCN d)NH₃
c
Which of the following statements concerning differences between ionic and molecular compounds is correct? a)Molecular compounds contain two elements, and ionic compounds contain three or more elements. b)Ionic compounds contain oxygen, and molecular compounds do not. c)Molecular compounds possess a molecular structural unit, and ionic compounds do not. d)none of the above
c
Which statement best describes the substance that results when electrons are transferred from a metal to a nonmetal? a. It contains ionic bonds and has a low melting point. b. It contains covalent bonds and has a low melting point. c. It contains ionic bonds and has a high melting point. d. It contains covalent bonds and has a high melting point
c
An oxygen molecule contains a double bond because the two atoms of oxygen share a total of a. 1 electron b. 3 electrons c. 2 electrons d. 4 electrons
d
Based on the electronegativities K = 0.8, H = 2.1, Br = 2.8, which of the following statements is true?a)H₂, Br₂, and HBr are nonpolar covalent molecules. b)KBr is a nonpolar covalent compound and HBr is an ionic compound. c)HBr is a nonpolar covalent compound and Br₂ is a polar covalent molecule. d)H₂ is a nonpolar covalent molecule and HBr is a polar covalent molecule.
d
Which of the following statements concerning double covalent bonds is correct? a)They are found only in molecules that contain S or O. b)They are found only in molecules that contain a coordinate covalent bond. c)They occur only between atoms containing 4 valence electrons. d)They always involve the sharing of 2 electron pairs.
d
Which of the following statements contrasting covalent bonds and ionic bonds is correct? a)Covalent bonds usually involve two nonmetals and ionic bonds usually involve two metals. b)Covalent bonds usually involve two metals and ionic bonds usually involve a metal and a nonmetal. c)Covalent bonds usually involve a metal and a nonmetal and ionic bonds usually involve two nonmetals. d)Covalent bonds usually involve two nonmetals and ionic bonds usually involve a metal and a nonmetal.
d
