Question

calculate the valency and valency electron of elements 1 to 20
plz reply fast ..​

Answer 1

Answer:

Element. Valency. Valence electron

Lithium 1 1

Beryllium 2. 2

Boron. 3 1

Carbon. 4. 4

Nitrogen. 3. 5

Oxygen. 2. 6

Flourine. 1. 7

Neon. 0. 8

Sodium 1. 1

Magnesium. 2. 2