Q1. Match the following elements to their valence electron.1. Cl. a) 82. Be. b) 33. Na. c) 24. B. d) 15. Ne.

June 2023 2 5 Report

Q1. Match the following elements to their valence electron.
1. Cl. a) 8
2. Be. b) 3
3. Na. c) 2
4. B. d) 1
5. Ne. e) 7

Chlorine is the 17th group element and has a valency of -1. So, the valence electron of chlorine is 7 (present in the outer shell).
Beryllium is the 2nd group element and has a valency of +2. So, the valence electron of beryllium is 2.
Sodium is the 1st group element that has a valency of +1. So, the valence electron in sodium is 1.
Boron is the 3rd group element and has a valency of +3. So, the valence electron in boron is 3.
The valency of neon is zero which is an element of the 18th group and thus it is unreactive. The valence electrons present in neon are 8.

Hoped its helpful for you. Mark me as brainlist mark please