describe the hybridization (sp3, sp2, sp) of the following bonds.

Question

BH3 (all single bonds)
Is it sp2?

H-C triple bond C-H
Is it sp?

A double bond with two methyls connected at each end
Is it sp2?

Please Help ASAP

Answer 1

yes, yes, yes although the last one must have something else attached to the two middle C atoms. As they stand they are trivalent and C doesn't like that. I assume you mean CH3C=CCH3 or more exactly, CH3CH=CHCH3.