Question

Valency of first 30 element

Answer 1

Hydrogen - 1
Helium - 0
Lithium - 1
Beryllium - 2
Boron - 3
Carbon - 4
Nitrogen - 1
Oxygen - 1
Fluorine - 1
Neon - 0
Sodium - 1
Magnesium - 2
Aluminium - 3
Silicon - 4
Phosphorous - 5
Sulphur - 4, 6
Chlorine - (-1)
Argon - 0
Potassium - 1
Calcite - 2
Scandium - 3
Titanium - 4
Vanadium - 5
Chromium - 3
Manganese - 2, 4
Iron - 2, 3
Cobalt - 2
Nickel - 2
Copper - 1, 2
Zinc - 2

Hope I helped you! :)

Answer 2

Here is the answer... 

Valency..

First of all , what's valency?

Valency is the capacity of an element to combine.
The valency of an element is Indicated by a specific number. It is the number of chemical bonds formed by one atom of that element with other atoms.

First 30 Elements and their Valency 


Hydrogen... Valency = 1

Helium...Valency = 0

Lithium...Valency = 1

Beryllium...Valency= 2

Boron...Valency = 3

Carbon...Valency = 4

Nitrogen...Valency = 3

Oxygen ...Valency =2

Fluorine...Valency= 1

Neon...Valency =0

Sodium...Valency =1

Magnesium...Valency =2

Aluminum....Valency= 3

Silicon...Valency= 4

Phosphorus...Valency = 3

Sulfur...Valency = 2

Chlorine...Valency= 1

Argon...Valency = 0

Potassium...Valency= 1

Calcium...Valency= 2

Scandium....Valency= 3

Titanium...Valency= 4

Vanadium...Valency =4

Chromium...Valency =2

Manganese ....Valency =2

Iron...Valency = 3

Cobalt...Valency = 2

Nickel...Valency = 2

Copper...Valency = 1

Zinc....Valency = 2