Chapter 7/8 Quiz
- 1.Which of the following best helps to account for the fact that the F- ion is smaller than the O2- ion?
- A.
F- has a larger nuclear mass than O2- has
- B.
F- has a larger nuclear charge than O2- has
- C.
F- has more electrons than O2- has
- D.
F- is more electronegative than O2- is
- E.
F- is more polarizable than O2- is
- 2.In which of the following groups are the three species isoelectronic; i.e., have the same number of electrons?
- A.
S2-, K+, Ca2+
- B.
Sc, Ti, V2+
- C.
O2-, S2-, Cl-
- D.
Mg2+, Ca2+, Sr2+
- E.
Cs, Ba2+, La3+
- 3.In the periodic table, as the atomic number increases from 11 to 17, what happens to the atomic radius?
- A.
It remains constant.
- B.
It increases only.
- C.
It increases, then decreases.
- D.
It decreases only.
- E.
It decreases, then increases.
- 4.Which of the following sets of quantum numbers (n, l, ml, ms) best describes the valence electron of highest energy in a ground-state gallium atom (atomic number 31) ?
- A.
4, 0, 0, 1/2
- B.
4, 0, 1, 1/2
- C.
4, 1, 1, 1/2
- D.
4, 1, 2, 1/2
- E.
4, 2, 0, 1/2
- 5.Which of the following statements about atoms is NOT correct?
- A.
Atoms are electrically neutral because they have the same number of protons and electrons.
- B.
All atoms of a given element must have the same number of protons, neutrons, and electrons.
- C.
Most of the volume of an atom contains only electrons.
- D.
The nucleus is positively charged.
- E.
Almost all of the mass of an atom is in the nucleus.
- 6.Of the following electron configurations of neutral atoms, which represents an atom in an excited state?
- A.
1s2 2s2 2p5
- B.
1s2 2s2 2p5 3s2
- C.
1s2 2s2 2p6 3s1
- D.
1s2 2s2 2p6 3s2 3p2
- E.
1s2 2s2 2p6 3s2 3p5
- 7.The atom that contains exactly two unpaired electrons
- A.
S
- B.
Ca
- C.
Ga
- D.
Sb
- E.
Br
- 8.The atom that contains only one electron in the highest occupied energy sublevel.
- A.
S
- B.
Ca
- C.
Ga
- D.
Sb
- E.
Sb
- 9.The effective nuclear charge experienced by the outermost electron of Na is different than the effective nuclear charge experienced by the outermost electron of Ne. This difference best accounts for which of the following?
- A.
Na has a greater density at standard conditions than Ne.
- B.
Na has a lower first ionization energy than Ne.
- C.
Na has a higher melting point than Ne.
- D.
Na has a higher neutron-to-proton ratio than Ne.
- E.
Na has fewer naturally occurring isotopes
- 10.Are the most likely to form anions
- A.
Noble gases
- B.
Alkali metals
- C.
Halogens
- D.
Transition elements
- E.
Actinides
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