Question

A. Write the valency and atomielty of the following elements.
Element
Symbel
Valency
Atomielty
Neon
Ne
Calcium
Hydrogen
H
Nitrogen
N
Oxygen
Chlorine
C
Carbon
Phosphorus
P
Sulphur
S​

Answer 1

Answer:

neon , 2 , 8, 2

valency, +2

calcium , 2, 8 , 8 , 2

valency , +2

hydrogen, 1

valency , -2

nitrogen , 2, 5

valency, -3

oxygen , 2, 6

valency, -2

chlorine , 2, 8 , 7

valency, -1

carbon, 2 , 4

valency, +4

phosphorus, 2, 8 , 5

valency, -3

sulphur, 2 , 8 , 6

valency, -2