Sample Questions - Chapter 6

Chemical Periodicity

Examples of
Multiple Choice Questions

The atom having the valence-shell configuration 4s² 4p⁵ would be in:; (a) Group VIA and Period 5; (b) Group IVB and Period 4; (c) Group VIB and Period 7; (d) Group VIIA and Period 4; (e) Group VIIB and Period 4
2.: Select the term best describing the series of elements: Mn, Fe, Co, Ni, Cu.; (a) d-transition metals; (b) representative elements; (c) metalloids; (d) alkaline earth metals; (e) halogens
3.: Which element has the largest atomic radius?; (a) Li; (b) Na; (c) Rb; (d) F; (e) I
4.: Which of the following terms accurately describes the energy associated with the process: Li(g) Li⁺(g) + e^-; (a) electron affinity; (b) binding energy; (c) ionization energy; (d) electronegativity; (e) none of these
5.: The species that contains 24 protons, 26 neutrons and 22 electrons would be represented by the symbol:; (a) ⁵⁰V³⁺; (b) ²⁶Cr²⁺; (c) ⁵⁰Cr²⁺; (d) ⁵⁰Mn²⁺; (e) none of these
6.: Which element has the lowest first ionization energy?; (a) He; (b) Ne; (c) Ar; (d) Kr; (e) Xe
7.: Which element has the highest first ionization energy? (Note: this is an exception to the general trend - see notes- you may be responsible for this.); (a) Be; (b) B; (c) C; (d) N; (e) O
8.: Which of these isoelectronic species has the smallest radius?; (a) Br^-; (b) Sr²⁺; (c) Rb⁺; (d) Se^2-; (e) They are all the same size because they have the same number of electrons.
9.: Which of the following elements has the greatest attraction for electrons in a covalent bond?; (a) Ge; (b) As; (c) Se; (d) Br; (e) Bi
10.: Which statement is wrong?; (a) The atomic weight of carbon is about 12.; (b) The most stable ion of lithium is Li⁺.; (c) A phosphorus atom is larger than an antimony atom.; (d) The radius of a sodium atom is larger than that of a sodium cation.; (e) Oxygen has a less negative electron affinity than fluorine.
11.: All of the following properties of the alkaline earth metals increase going down the group except; (a) atomic radius; (b) first ionization energy; (c) ionic radius; (d) atomic mass; (e) atomic volume
12.: Which of the following is an ionic hydride?; (a) PH₃; (b) H₂S; (c) HI; (d) KH; (e) CH₄
13.: Which of the following is the most basic oxide?; (a) N₂O₃; (b) N₂O₅; (c) P₄O₆; (d) P₄O₁₀; (e) Bi₂O₅

Answers:

1. (d) 2. (a) 3. (c) 4. (c) 5. (c) 6. (e) 7. (d) 8. (b) 9. (d) 10. (c) 11. (b) 12. (d) 13. (e)

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