Question

First 30 element and their valency,oxidation number

Answer 1

Hydrogen=1

Helium=0

Lithium=1

Beryllium=2

Boron=3

Carbon=4

Nitrogen=3

Oxygen= 2

Flourine=1

Neon=0

Sodium=1

Magnesium=2

Aluminium=3

Silicon=4

Phosphorus=3,5

sulphur=2

Chlorine=1

Argon=0

potassium=1

calcium=2

Scandium=3

titanium=4

vanadium=3

chromium=2

Manganese=1

Iron=0

cobalt=1

Nickel=2

Copper=3

Zinc=4