First slide

Alkynes

Question

The compound in which carbons uses only its sp hybrid orbitals for bond formation is

Moderate

A

Acetylene
B

Propane
C

Butane
D

Propyne

Solution

$In Acetylene (C_{2} H_{2}) carbons are 'sp' hybridization$
$In Propane (C_{3} H_{8}), & Butane (C_{4} H_{10}) all carbons are s p^{3} hybridization$
In propyne $\begin{array}{l} {C H_{3}}_{↓}^{3} - C_{↓}^{2} \equiv \overset{1}{\underset{↓}{C}} H \\ s p^{3} s p s p \end{array}$ $C_{1} (s p), C_{2} (s p)$ and $C_{3} (s p^{3})$ hybridization

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