Allene must have which of the following type of hybridised carbon?

Question

Question

This question was previously asked in

DSSSB PGT Chemistry (Female) Official Paper (Held On: 06 Jul, 2018 Shift 1)

Answer 1

CONCEPT:

Hybridization in Allene

Allene (C₃H₄) is a molecule where two double bonds are connected to the central carbon atom.
The structure of allene consists of:
- A central carbon atom bonded to two terminal carbon atoms via double bonds.
- The central carbon forms two sigma bonds and two pi bonds.
For carbon atoms in double bonds:
- The central carbon atom in allene is sp hybridized because it forms two sigma bonds and has two perpendicular pi bonds.
- The terminal carbon atoms are sp² hybridized because they form one sigma bond with the central carbon and one pi bond.

EXPLANATION:

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In allene:
- The central carbon atom has two linear bonds (C=C bonds) and is sp hybridized.
- This hybridization allows the central carbon to form two perpendicular π systems, giving the molecule its unique geometry.

Therefore, the correct answer is Option 3: The central carbon in allene is sp hybridized.