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e. 34 24 10<br />
____ 189. Which one of the following Lewis dot formulas is incorrect?<br />
a.<br />
b.<br />
c.<br />
d.<br />
e.<br />
____ 190. Which Lewis dot formula is incorrect?<br />
a.<br />
b.<br />
c.<br />
d.<br />
e.<br />
____ 191. Draw the dot formula for ethylene, C2H4. Each carbon-hydrogen bond is a __________ bond and each<br />
carbon-carbon bond is a __________ bond.<br />
a. single, single<br />
b. single, double<br />
c. single, triple<br />
d. double, single<br />
e. double, double<br />
____ 192. The Lewis dot formula for N2 shows<br />
a. a single covalent bond.<br />
b. a double covalent bond.<br />
c. a triple covalent bond.<br />
d. a single ionic bond.
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