2. The maximum number of electrons
that can exist in the n=4, 1=3, ml=-1 orbital is:
a. 2
b. 10 c. 14
d. 32
3. The number of orbitals in the 15d
subshell is
a. 1.
b. 3. c. 5.
d. 18.
4. Which one of the following sets
of quantum numbers is INCORRECT?
a. n = 3, 1 = 2, ml
= +1, ms = -1/2
b. n = 3, 1=3, ml = -1, ms = +1/2
c. n = 2, 1 = 1, ml
= 0, ms = -1/2
d. n = 4, 1=0, ml = 0, ms = -1/2
5. The elements in Groups 13 through
18 (excluding He) are called the
a. s-block elements.
b. p-block elements.
c. d-block elements.
d. first transition series.
6. An example of an s-block element
is
a. calcium.
b. copper.
c. chlorine.
d. carbon.
7. The element with the outer electron
configuration ns2 np3 in the ground state is found
in Group
a. 12.
b. 13.
c. 14.
d. 15.
8. The element with the electron configuration
[Ar] 4s2 3d10 4p5 is
a. Se.
b. Br.
c. I.
d. Mn.
9. The configuration 1s2
2s2 2p6 3s2 3p2 represents
a. an atom of P.
b. an atom of Si.
c. a diamagnetic atom.
d. an atom of Ge.
10. The core for As is
a. [P].
b. [Sb]. c.
[Kr]. d. [Ar].
11. The abbreviated electron configuration
for the ground state of niobium, atomic number 41, is
a. [Xe] 5s2
4d3. b.
[Kr] 5s2 4d3.
c. [Kr] 5s2 4f5 6d3.
d. [Xe] 6s2 5d10 4f7.
12. The ground state electron configuration
for Ni2+ shows that it
a. has 4 unpaired electrons
and is diamagnetic.
b. has 2 unpaired electrons
and is paramagnetic.
c. has 4 unpaired electrons
and is paramagnetic.
d. has 2 unpaired electrons
and is diamagnetic.
13. The element with the outer electron configuration
3s2 3p4 is in
a. Group 13.
b. Group 14. c.
Group 15. d. Group
16.
14. Which element has a valence-shell electron
configuration of ns2 np1?
a. silicon
b. gallium c.
nitrogen d. tin
15. An ion isoelectronic with an atom of argon
is
a. Na+1.
b. Mg2+.
c. N3-.
d. Cl-1.
16. The abbreviated electron configuration
for Fe3+ is
a. [Ar] 4s2
3d5.
b. [Ar] 3d5.
c. [Kr] 3d3.
d. [Ar] 4s2 3d3.
17. From a consideration of electronic configurations,
which of the elements indicated below would be classified
as a transition
element?
a. 1s2,2s2,2p6,3s2,3p5
b. 1s2,2s2,2p6,3s2,3p6,4s2
c. 1s2,2s2,2p6,3s2,3p6,4s2,3d5
d. 1s2,2s2,2p6,3s2,3p6,4s2,3d10,4p6
18. Which of the following is paramagnetic?
a. Na
b. Mg
19. Which of the following species is paramagnetic?
a. O
b. Zn2+
c. K1+
d. S2-
20. The element in Group 1 with the lowest
ionization energy is
a. Na.
b. K.
c. Rb.
d. Cs.
21. Which of these fourth period elements
has the highest ionization energy?
a. K
b. Zn
c. Ga
d. Kr
22. Which of these fourth period elements
has the largest atomic radius?
a. K
b. Zn
c. Ga
d. Kr
23. Which has the smallest atomic radius?
a. Na.
b. K.
c. Rb.
d. Cs.
24. Based upon position in the periodic table,
the most electronegative element of this set is
a. Cs.
b. Ca.
c. Co.
d. S.
25. Which of the following is matched with
the CORRECT molecular geometry?
a. H3O1+
trigonal pyramidal
b. CF2Cl2 trigonal bipyramidal
c. I31-
bent
d. SO2 linear
26. Which of the following statements concerning
IO41- is FALSE?
a. The Lewis structure
shows iodine as the central atom with 4 oxygen atoms bonded to the iodine
with single bonds.
b. The Lewis structure
has a total of 12 lone pairs of electrons.
c. The Lewis structure
does not have lone pairs on the central atom.
d. The molecular shape
is square planar.
27. In SeCl4 molecular geometry
is
a. linear.
b. square planar.
c. seesaw.
d. tetrahedral.
28. Which of the following is a non-polar
molecule?
a. I2
b. IF c. CH2I2
d. NI3
29. All of the following molecules have polar
bonds and are polar molecules except
a. ICl3.
b. BCl3.
c. PCl3.
d. H2CCl2.
30. The central atom in the iodite ion, IO21-,
is surrounded by
a. two bonding pairs and
two unshared pairs of electrons.
b. three bonding pairs
and one unshared pair of electrons.
c. one bonding pair and
three unshared pairs of electrons.
d. two double bonds and
no unshared pairs of electrons.
31. The number of valence electrons in the
Lewis structure for OF2 is
a. 18.
b. 20. c. 22.
d. 24.
32. Which bond would be expected to have the
positive end of the bond dipole on the nitrogen atom?
a. N-H
b. C-N c. Al-N
d. N-O
33. Which one of the following has a Lewis
structure most like that of CO?
a. NO1+
b. NO1-
c. H2O
d. O2
34. In which of the following species is the
octet rule violated by the central atom?
a. PCl3
b. COCl2
c. BCl3
d. NCl3
35. The number of lone pairs of electrons
about the central Cl atom in the chlorate ion, ClO3-1,
is
a. 0.
b. 1. c. 2.
d. 3.
36. The bonds between which two elements are
most polar?
a. Cl and Br
b. P and S
c. C and P
d. B and F
37. Based upon position in the periodic table,
the least electronegative element of this set is
a. Rb.
b. Ag. c. Sn.
d. I.
38. Which of the following has a molecular
shape which is linear?
a. BeCl2
b. SO2
c. H2O
d. NH3
39. The molecular shape of ClO31-
is
a. trigonal planar.
b. T-shaped.
c. trigonal pyramidal.
d. trigonal bipyramidal.
40. The molecular shape of BCl3
is
a. trigonal planar.
b. T-shaped.
c. trigonal pyramidal.
d. trigonal bipyramidal.
41. The shape of PO43-
is
a. tetrahedral.
b. seesaw.
c. square planar
d. octahedral.