Question

explain the Valency of first 30 elements

Answer 1

1.Hydrogen=1
2.Helium=0
3. Lithium=1
4.Beryllium=2
5.Boron=3
6.Carbon=4
7. Nitrogen=3
8.Oxygen= 2
9.Flourine=1
10. Neon=0
11.Sodium=1
12.Magnesium=2
13.Aluminium=3
14.Silicon=4
15.Phosphorus=3,5
16.Sulphur=2
17.Chlorine=1
18.Argon=0
19.potassium=1
20.calcium=2
21. Scandium=3
22.titanium=4
23.vermadium=3
24. chromium=2
25Magnese=1
26.Iron=0
27.cobalt=1
28.Nickel=2
29.Copper=3
30.Zinc=4

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