Question

in the following molecule, determine whether c6 is $sp^{2}$ - or $sp^{3}$ -hybridized. select the single best answer.
$o_{1}n_{7}c_{6}h_{1}c_{5}h_{1}n_{2}c_{4}h_{1}n_{3}h_{2}$
$osp^{3}$
$osp^{2}$

Explanation:

Step1: Analyze bonding of C6

Carbon - 6 (C6) has a double - bond with carbon - 5 (C5) and single - bonds with a hydrogen atom and nitrogen - 7 (N7).

Step2: Recall hybridization rules

A carbon atom with 3 sigma bonds and 1 pi bond (double - bond contains 1 sigma and 1 pi bond) is $sp^{2}$ hybridized. C6 has 3 sigma bonds and 1 pi bond.

Answer:

$sp^{2}$