Review Final Exam
1.The hybridization of the central atom in XeF5+ is:
A) sp
B) sp2
C) sp3
D) dsp3
E) d2sp3
2.The hybridization of the central atom in I3– is:
A) sp
B) sp2
C) sp3
D) dsp3
E) d2sp3
3.What hybridization is predicted for the nitrogen atom in the NO3– ion?
A) sp2
B) sp3
C) dsp3
D) d2sp3
E) none of these
4.Consider the molecule:
Specify the hybridization of each carbon atom.
A)
B)
C)
D)
E)
C-1
C-2
sp2
sp2
sp2
sp2
sp2
sp2
sp2
sp2
sp2
sp
C-3
sp2
sp2
sp3
sp3
sp
C-4
sp3
sp3
sp3
sp3
sp2
C-5
sp
sp3
sp2
sp3
sp
Complete the Lewis structure for the following molecule:
5. This molecule has __________ sigma and __________ pi bonds.
A)
B)
C) 11, 5
D) 4, 5
E) 6, 3
6. Which of the following species is paramagnetic?
A) C2
B) O2
C) F2
D) Li2
E) none of these
7. Which of the following has the largest bond order?
A) N2
B) N2–
C) N22–
D) N2+
E) N22+
8.Chromium metal crystallizes as a body-centered cubic lattice. If the atomic radius of Cr is 1.25
angstroms, what is the density of Cr metal in g/cm3?
A) 5.52
B) 7.18
C) 14.4
D) 2.76
E) 3.59
9.A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 395 pm. The
diameter of the metal atom is:
A) 140 pm
B) 198 pm
C) 279 pm
D) 395 pm
E) none of these