1. According to the relative electronegativities, a bond between carbon and silicon would be expected to be
a) nonpolar
b) polar, with a greater positive charge on carbon
c) polar, with a greater positive charge on silicon
d) ionic
2. When a sodium atom ionizes to become a sodium cation,
a) it loses a 2s electron
b) it gains a 2s electron
c) it shares a 2s electron
d) it loses a 3s electron
e) it gains a 3s electron
3. Which of the following could have the molecular formula C3H8 ?
a) an alkane
b) a cycloalkane
c) an alkene
d) an alcohol
e) none of the above
4. Which compound will have bond angles closest to 120° ?
a) cyclopropane
b) propane
c) water
d) methanol
e) ethylene
5. The hybridization of carbon in CO2 is
a) sp
b) sp2
c) sp3
d) unhybridized