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

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 and electron domain geometry is tetrahedral.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).