Question

An atom has 4 protons and 5 neutrons what is its valency?​

Answer 1

its valency is 2 as it will have 4 electrons which are equal to the no. of protons.

Answer 2

Answer:

Protons = 4

Neutrons = 5

Number of protons = Number of electrons

Number of electrons = 4

Electronic Configuration

= 2,2

Number of Valence electrons in the outermost shell = 2

Valency = 2