Question

valency of first 30 elements

Answer 1

hydrogen    1
helium        0
lithium        1
beryllium     2Boron         3Carbon       4Nitrogen     3 Oxygen      2Fluorine      1 Neon          Sodium  1Magnesium+213Aluminum+314Silicon-4, (+2), +415Phosphorus-3, +1, +3, +516Sulfur-2, +2, +4, +617Chlorine-1, +1, (+2), +3, (+4), +5, +718Argon019Potassium+120Calcium+221Scandium+322Titanium+2, +3, +423Vanadium+2, +3, +4, +524Chromium+2, +3, +625Manganese+2, (+3), +4, (+6), +726Iron+2, +3, (+4), (+6)27Cobalt+2, +3, (+4)28Nickel(+1), +2, (+3), (+4)29Copper+1, +2, (+3)30Zinc+2

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