Same chapter3 marksDifficulty: Medium
Explain why carbon dioxide is non-polar although each C=O bond is polar.
Chemical Bonding and Molecular Structure
3 marksDifficulty: Medium
What is hybridisation? State the hybridisation and shape of the carbon atom in methane, ethene and ethyne.
Original Khojo Papers practice question — not from a past board paper.
Answer
Hybridisation is the mixing of atomic orbitals of nearly equal energy to give an equal number of new orbitals of identical shape and energy. Carbon is sp3 hybridised and tetrahedral in methane, sp2 and trigonal planar in ethene, and sp and linear in ethyne.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The bond angles are about 109.5°, 120° and 180° respectively.
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