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What is the bond angle of H-C-H in methane molecule?(a) 104.5°(b) 109.5°(c) 108°(d) 120°The question was posed to me in my homework.The origin of the question is Molecular Structure topic in portion Chemical Bonding and Molecular Structure of Chemistry – Class 11

Answer»

Correct answer is (B) 109.5°

To EXPLAIN I would say: The molecule of methane i.e. CH4 had undergone sp^3 hybridization (1 s-orbital and 3 p-orbitals COMBINE to give 4 sp^3 orbitals). It exhibits tetrahedral geometry. In tetrahedral geometry, the angle between the BONDS of corner atoms and the central atom is 109.5°.



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