Sample Questions - Chapter 23

Metal Properties & Reactions

Examples of
Multiple Choice Questions

1.: Which of the following is NOT true for the Group 1A elements?; (a) Most of them are soft, silvery corrosive metals.; (b) Their atomic radii increases with increasing molecular weight.; (c) They are named the alkaline earth metals.; (d) They are excellent conductors of heat and electricity.; (e) They exhibit a +1 oxidation state in compounds.
2.: Which element group is the most reactive of all the metallic elements?; (a) alkali metals; (b) alkaline earth metals; (c) coinage metals; (d) transition metals; (e) Group 2B metals
3.: In a surprisingly large number of their properties beryllium resembles aluminum, and boron resembles silicon. Such a relationship is called:; (a) amphoterism; (b) an allotropic relationship; (c) a diagonal relationship; (d) the periodic law; (e) an isoelectronic series
4.: Which of the following properties of the alkaline earth metals decreases with increasing atomic weight?; (a) ionic radii; (b) ionization energy; (c) atomic radii; (d) activity; (e) atomic number
5.: Of the following oxides, the most basic is:; (a) MgO.; (b) Na₂O.; (c) P₂O₃.; (d) BeO.; (e) SO₂.
6.: A 300 g sample of CaCO₃ was heated until 10.0 L of CO₂ was collected at 50.0^oC and 742 torr. What percentage of the CaCO₃ had decomposed?; (a) 6.84%; (b) 9.10%; (c) 12.3%; (d) 15.8%; (e) 20.6%
7.: What mass of lithium nitride could be formed from 104 g of lithium and excess nitrogen gas?; (a) 35 g; (b) 60 g; (c) 105 g; (d) 140 g; (e) 174 g
8.: The most abundant metal in the earth's crust is:; (a) Cu; (b) Fe; (c) Na; (d) Al; (e) Ca
9.: Which element has the electron configuration [Ar] 3d⁷ 4s²?; (a) Fe; (b) Co; (c) Cr; (d) Ti; (e) Zn
10.: What is the electron configuration of Mn³⁺ ion?; (a) [Ar] 4s² 3d¹⁰; (b) [Ar] 4s² 3d²; (c) [Ar] 3d⁵; (d) [Ar] 3d⁴; (e) [Ar] 4d¹ 3d³
11.: The nitrate of which of the following cations would exhibit paramagnetism to the GREATEST extent?; (a) Co³⁺; (b) Cr³⁺; (c) Fe³⁺; (d) Mn³⁺; (e) V³⁺

Answers to Chapter 23

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

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