Question

An atom is 3 protron and 4 netron what will be valency​

Answer 1

Given

• atom has 3 protron and 4 netron

Atomic number = Number of protons = 3

Mass number = Number of protons + number of neutrons

• = 3 + 4 = 7.

Hence, its valency is 1

additional information

• If an atom contains 3 protons and 4 neutrons then atom will be of Lithium element which has 1 Valence electron.
• Hydrogen which has valency 1 resembles Halogens like Fluorine, chlorine.

Answer 2

Answer:

1 is your answer. hope it's helpful to you