Question

A molecule in which the central atom has no lone pairs and forms four single bonds is said to have a ________ shape.

Answer 1

Answer: tetrahedral

Explanation:

Hybridization is calculated using the Lewis dot structures of all the compounds.

Formula used to calculate the number of atomic orbitals around central metal atom is:

Number of atomic orbitals around central metal atom = Number of bond pairs + Number of lone pairs

Bond pairs for a double bond and triple bond is taken as 1 only.

Given:  Number of bond pairs = 4

Number of lone pairs = 0

If Number of atomic orbitals around central metal atom are 4 , the hybridization is $sp^3$ and electron domain geometry is tetrahedral.

Answer 2

It should be tetrahedral. Good example is CH4