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When the hybridization state of carbon atom changes from sp3 to sp2 and finally to sp, the angle between the hybridized orbitals

1. decreases gradually
2. decreases considerably
3. is not affected
4. increases progressively

Correct answer: increases progressively

Solution

As the hybridization changes from sp3 (109.5°) to sp2 (120°) and then to sp (180°), the bond angle increases progressively due to the decreasing s-character in the hybrid orbitals.

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