Question

which of the following is electron deficient species a) C2H6 b) SiH4 c) PH3 d) B2H6 ?

Answer 1

hloo frnd and your answer is B2H6.
reason: This compound contain less number of electrons to form all two centred – two electrons bonds. So it is called as Electron deficient compound.

hope it helps u...☺☺

Answer 2

Hey dear,

● Answer -
(d) Diborane (B2H6)

● Explanation -
[Refer to the figure for structure of diborane.]

- B-atom in diborane is sp 3 hybridized.
- B2H6 molecule has total 8 covalent bonds but only 12 electrons i.e. 6 pairs.
- Therefore, it has 2 electron pairs less than maximum required number for bonding, which makes it electron deficient.

Hope this helps you...