Question

The hybridization of carbons labelled 3, 4 and 5

1 2 3 4 5 6 7

$HC\equiv C-CH=C=CH-CH=C{H}_2$ are

• A. Sp² only
• B. Sp² in C-4 and SP³ in 3 and 5
• C. Sp² in C-3 and C-5 and SP in C-4
• D. SP only

Answer 1

The correct option is C

Sp² in C-3 and C-5 and SP in C-4

Carbon which has $3\sigma$ bonds and $1\pi$ bond in C-3 and C-5 $S{P}^2$ hybridsed.

Carbon which has $3\sigma$ bonds and $1\pi$ bond as in C-4 is SP hybridised.