Question

. Which of the following species has tetrahedral geometry ? (a) BH4– (c) CO3(2-)(6) NH2- (d) H3o+​

Answer 1

(a) BH4⁻

Explanation:

• (a) BH4 is the correct option it has tetrahedral geometry.
• Boron atom undergoes sp³ hybridisation and it has 4 bond pairs no lone pair.  

Answer 2

Answer:

(a) BH4-

Explanation:

BH4– has 4 bond pairs and 0 lone pairs, so it is tetrahedral.

CO3(2-) has 3 bond pairs and 0 lone pairs, so it is trigonal planar.

NH2- has 4 bond pairs and 2 lone pairs, so it is bent or angular.

H3O+​ has 4 bond pairs and 1 lone pair, so it is a trigonal pyramid.

Molecular Geometry is greatly summed up in the table (photo attached) if you would like to further understand it.