Chapter 5 Multiple Choice
What is the ground-state electron configuration of the ion Cu2+? a. [Ar] 4s^13d^8 b. [Ar] 4s^23d^104p^1 c. [Ar] 3d^9 d. [Ar] 4s^23d^7
c
What type of bonding occurs in Calcium Chloride, CaCl2 a. Covalent b. Metalic c. Ionic
c
Which element has the least favorable (least negative) electron affinity? a. Br b. Se c. Be d. As
c
Which of the following atoms with the specified electronic configurations would have the lowest first ionization energy? a. [Ne]3s^23p^4 b. [He]2s^22p^3 c. [Xe] 6s^1 d. [Xe]6s^24f^145d^106p^1
c
In the reaction of sodium metal with chlorine gas which of the following processes releases energy? a. Na(g) → Na+(g) + e- b. Na(s) → Na(g) c. Cl(g) + e- → Cl-(g) d. Cl2(g) → 2 Cl(g)
c
List the elements Na, Ca, Rb, Cl, He in order of decreasing first ionization energy. a. Rb > Ca > Cl > Na > He b. He > Na > Cl > Ca > Rb c. He > Cl > Ca > Na > Rb d. He > Na > Ca > Cl > Rb
c
An element that has the valence electron configuration 2s2 2p2 belongs to which period and group? a. period 2; group 4A b. period 3; group 2A c. period 2; group 2A d. period 3; group 4A
a
Of the following, which element has the highest first ionization energy? a. Hellium b. Neon c. Argon d. Kryptom
a
Phosphorus pentoxide (P4O10P4O10) is used as a dehydrating agent in many organic synthesis reactions. What type of bonding occurs between the atoms of a P4O10P4O10 molecule? a. Covalent b. Metalic c. Ionic
a
Which contains both covalent bonds and ionic bonds? a. NH4Br b. HI c. KBr d. NH3
a
Which contains ionic bonds? a. BaCl2 b. NH3 c. CCL4 d. F2
a
Which ion has the smallest ionic radius? a. F^- b. I^- c. Cl^- d. Br^-
a
Which ionization process requires the most energy? a. W3+(g) → W4+(g) + e- b. W2+(g) → W3+(g) + e- c. W(g) → W+(g) + e- d. W+(g) → W2+(g) + e-
a
Which of the following ions does not have a true noble-gas configuration? a. Ga^3+ b. K^+ c. S^2- d. P^3-
a
Which of the following sets of ions is isoelectronic? a. Na^+, Mg^2+, Al^3+ b. Ti^4+, Ca^2+, Cl^- c. O^2-, S^2-, Se^2- (Choose all that apply)
a,b
Consider the following ground state electron configuration: 1s22s22p4. Which of the ions has this ground state electron configuration? a. O^-2 b. C^-2 c. F^-1 d. N^+1
b
How many valence shell electrons does an atom of O have? a. 4 b. 6 c. 8 d. 1
b
Of the following, which element has the highest first ionization energy? a. Gallium b. Germanium c. Calcium d. Potassium
b
Of the following, which element has the highest first ionization energy? a. Rb b. Ca c. Na d. Sr
b
What type of bonding occurs in a sample of pure barium, BaBa? In other words, how is one barium atom held to another barium atom? a. Covalent b. Metalic c. Ionic
b
Which contains covalent bonds? a. MgBr2 b. NH3 c. LiF d. K2O
b
How many electrons does barium lose and nitrogen need to form Ba3P2? a. barium loses 3 and phosphorus gains 3 b. barium loses 2 and phosphorus gains 2 c. barium loses 2 and phosphorus gains 3 d. barium loses 3 and phosphorus gains 2
c
How many valence shell electrons does an atom of indium have? a. 1 b. 49 c. 3 d. 2
c
Of the following, which element has the highest first ionization energy? a. Na b. Al c. Cl d. P
c
Arrange the ions N3-, O2-, Mg2+, Na+, and F- in order of increasing ionic radius, starting with the smallest first. a. N^3-, O^2-, Mg^2+, F^-, Na^+ b. N^3-, O^2-, F^-, Na^+, Mg^2+ c. N^3-, Mg^2+, O^2-, Na^+, F^- d. Mg^2+, Na^+, F^-, O^2-, N^3-
d
Indicate which is larger in each of the following two sets. (I) Cu+ or Cu(II) Te2- or Te a. Cu is larger than Cu+ and Te is larger than Te2-. b. Cu+ is larger than Cu and Te is larger than Te2-. c. Cu+ is larger than Cu and Te2- is larger than Te. d. Cu is larger than Cu+ and Te2- is larger than Te. Submit
d
The electron configuration of an element, X, is [Ne]3s2 . The formula of the most probable ionic compound that this element will form with O is a. X2O b. X2O3 c. X3O2 d. XO
d
Which ion has the same electron configuration as Kr? a. Se^2- b. Rb^+ c. Br^- d. All of these
d
Which ion has the smallest ionic radius? a. Na^+ b. K^+ c. Rb^+ d. Li^+
d
