Question

Which ofthe following is an electron deficient compound 1)CH 2) AICI 3) H0 4) NHÀ​

Answer 1

Answer:

A

Explanation:

In Diborane structure, each Boron bonds with 4 hydrogen atoms. But Boron valency is 3. Each Boron gives 3 valence electrons but for the 4th bond, there is no electron from Boron side which makes it electron deficient.

(Refer to Image 2)

In AlCl3, Al atom bonds with 3 Cl atoms. But here it violates octet rule. There are no bonds or lone pairs, which makes the surrounding electron count 8. It has only 3 bonds which makes 6 electrons. So, it is an electron deficient compound. So, both AlCl3 and B2H6 are electron deficient compounds.

Answer 2

HO is an electron deficient compound .As it has an oxygen molecule which contains negative charge.