AP Chemistry-midterm review - Quia

c. sp 3
d. sp 3 d
e. sp 3 d 2
____ 209. The central atom in a molecule is sharing a total of 12 electrons. What type of hybrid orbitals are formed by
the central atom?
a. sp
b. sp 2
c. sp 3
d. sp 3 d
e. sp 3 d 2
____ 210. What kind of hybrid orbitals are utilized by the boron atom in BF3 molecules?
a. sp
b. sp 2
c. sp 3
d. sp 3 d
e. sp 3 d 2
____ 211. Which of the following is a false statement about BF3?
a. BF3 has trigonal planar molecular geometry.
b. BF3 has trigonal pyramidal electronic geometry.
c. All three bond angles in BF3 are 120 .
d. The B atom does not satisfy the octet rule.
e. Although the electronegativity difference between B and F is large (2.0 units), BF3 is a
covalent compound.
____ 212. Which of the following statements about chloroform, CHCl3, is false?
a. The hybridization of C is sp 3 .
b. The hybridization of Cl is sp 3 .
c. The bond angles are 109.5 .
d. The molecule is polar.
e. The molecule has tetrahedral electronic geometry.
____ 213. For AsF3, the electronic geometry is __________ and the molecular geometry is __________.
a. tetrahedral, trigonal planar
b. trigonal planar, tetrahedral
c. tetrahedral, tetrahedral
d. trigonal planar, trigonal planar
e. trigonal planar, linear
____ 214. Which of the following statements regarding a carbon atom involved in 2 double bonds is false?
a. The geometry is linear.
b. The hybridization is sp.
c. There are 2 sigma and two pi bonds.
d. The C atom has two unhybridized p atomic orbitals.
e. The C atom can make one more bond to complete its octet.
____ 215. Choose the species that is incorrectly matched with the electronic geometry about the central atom.
Molecule Electronic Geometry
a. SiH4 tetrahedral