Order of bond length

Which is the correct order of bond lengths in methyl mercaptan

(a)C-S > C-H > S-H (b)C-S >S-H > C-H

(c)S-H >C-S > C-H (d) none

2 Answers

(B) for obvious reasons..

i think it shud be B
as in S-H there is overlap of 3p-1s
in C-H 2p-1s and
in C-S 2p-3p

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