How to learn valency and how to find it in any given chemical reaction - Science - Chemical Reactions and Equations

Question

How to learn valency and how to find it in any given chemical
reaction

Shivani Thakur · Accepted Answer

DEAR
STUDENT,
The important valencies of some of the elements are as
follows:

Element
Atomic
Number
Valency

Valency
of Hydrogen
1
1

Valency
of Helium
2
0

Valency
of Lithium
3
1

Valency
of Beryllium
4
2

Valency
of Boron
5
3

Valency
of Carbon
6
4

Valency
of Nitrogen
7
3

Valency
of Oxygen
8
2

Valency
of Fluorine
9
1

Valency
of Neon
10
0

Valency
of Sodium (Na)
11
1

Valency
of Magnesium (Mg)
12
2

Valency
of Aluminium
13
3

Valency
of Silicon
14
4

Valency
of Phosphorus
15
3

Valency
of Sulphur
16
2

Valency
of Chlorine
17
1

Valency
of Argon
18
0

Valency
of Potassium (K)
19
1

Valency
of Calcium
20
2

Valency
of Scandium
21
3

Valency
of Titanium
22
4

Valency
of Vanadium
23
5,4

Valency
of Chromium
24
2

Valency
of Manganese
25
7, 4,
2

Valency
of Iron (Fe)
26
2,
3

Valency
of Cobalt
27
3,
2

Valency
of Nickel
28
2

Valency
of Copper (Cu)
29
2,
1

Valency
of Zinc
30
2
â€‹

for
example, in a reaction
NaCl + H2O → NaOH + HCl
in this case valency of Na is 1, Cl is 1, H is 1, O is 2
in this way, you can find the valency of any reaction by learning
the above valencies
REGARDS,
â€‹â€‹â€‹â€‹â€‹

Element	Atomic Number	Valency
Valency of Hydrogen	1	1
Valency of Helium	2	0
Valency of Lithium	3	1
Valency of Beryllium	4	2
Valency of Boron	5	3
Valency of Carbon	6	4
Valency of Nitrogen	7	3
Valency of Oxygen	8	2
Valency of Fluorine	9	1
Valency of Neon	10	0
Valency of Sodium (Na)	11	1
Valency of Magnesium (Mg)	12	2
Valency of Aluminium	13	3
Valency of Silicon	14	4
Valency of Phosphorus	15	3
Valency of Sulphur	16	2
Valency of Chlorine	17	1
Valency of Argon	18	0
Valency of Potassium (K)	19	1
Valency of Calcium	20	2
Valency of Scandium	21	3
Valency of Titanium	22	4
Valency of Vanadium	23	5,4
Valency of Chromium	24	2
Valency of Manganese	25	7, 4, 2
Valency of Iron (Fe)	26	2, 3
Valency of Cobalt	27	3, 2
Valency of Nickel	28	2
Valency of Copper (Cu)	29	2, 1
Valency of Zinc	30	2

How to learn valency and how to find it in any given chemical reaction .