According to the VSEPR theory, which of the following factors determines the shape of a molecule? Check all that apply.
Number of atoms attached to the central atom
Lone pair(s) on the central atom
Number of electrons in the first subshell
Number of neutrons in the nucleus

B only

Explanation:

Using the VSEPR principle, the electron bond pairs and the lone pairs on the middle atom help us predict the structure of the molecule. The shape of a molecule is determined by the position of the nucleus and its electrons. The electrons and the nucleus settle in positions that minimize repulsion and maximize attraction.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8