Question

valency of first 30 elements

Answer 1

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

Answer 2

$\begin{gathered}\begin{array}{| c | c | c |}\hline\bf Atomic\:No. & \bf Elements & \bf Valency \\ \hline1 &\sf Hydrogen & 1 \\ \hline 2 &\sf Helium & 0 \\ \hline 3 &\sf Lithium & 1 \\ \hline 4 &\sf Berrylium & 2 \\ \hline 5 &\sf Boron & 3 \\ \hline 6 &\sf Carbon & 4 \\ \hline 7 &\sf Nitrogen & 3 \\ \hline 8 &\sf Oxygen & 2 \\ \hline 9 &\sf Flourine & 1 \\ \hline 10 &\sf Neon & 0 \\ \hline 11 &\sf Sodium & 1 \\ \hline 12 &\sf Magnesium & 2 \\ \hline13 &\sf Aluminium & 3 \\ \hline 14 &\sf Silicon & 4 \\ \hline 15 &\sf Phosphorus & 3 \\ \hline 16 &\sf Sulphur & 2 \\ \hline 17 &\sf Chlorine & 1 \\ \hline 18 &\sf Argon & 0 \\ \hline 19 &\sf Potassium & 1 \\ \hline 20 &\sf Calcium & 2 \\ \hline 21 &\sf Scandium & 3 \\ \hline 22 &\sf Titanium & 4 \\ \hline 23 &\sf Vanadium & 5,4 \\ \hline 24 &\sf Chromium & 2 \\ \hline 25 &\sf Manganese & 7,4,2 \\ \hline 26 &\sf Iron & 2,3 \\ \hline 27 &\sf Nickel & 3,2 \\ \hline 28 &\sf Cobalt & 2 \\ \hline 29 &\sf Copper & 2,1 \\ \hline 30 &\sf Zinc & 2 \\ \hline\end{array}\end{gathered}$

I Hope It Helps!