what is the valency of 1 to 20 element
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The first 20 elements in the periodic table start with H and end with Ca. As acc. to the periodic table the valencies are
1 Hydrogen 1
2 Helium 0
3 Lithium 1
4 Beryllium 2
5 Boron 3
6 Carbon 2, 4
7 Nitrogen 3, 5
8 Oxygen 2
9 Fluorine 1
10 Neon 0
11 Sodium 1
12 Magnesium 2
13 Aluminium 3
14 Silicon 4
15 Phosphorus 3, 5
16 Sulphur 2, 4, 6
17 Chlorine 1, 3, 5, 7
18 Argon 0
19 Potassium 1
20 Calcium 2
1 Hydrogen 1
2 Helium 0
3 Lithium 1
4 Beryllium 2
5 Boron 3
6 Carbon 2, 4
7 Nitrogen 3, 5
8 Oxygen 2
9 Fluorine 1
10 Neon 0
11 Sodium 1
12 Magnesium 2
13 Aluminium 3
14 Silicon 4
15 Phosphorus 3, 5
16 Sulphur 2, 4, 6
17 Chlorine 1, 3, 5, 7
18 Argon 0
19 Potassium 1
20 Calcium 2
Kaur000:
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Btw u can think whatever u want but it is true .
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i'm damm sure
R u mad??
Chutkuu .. :P
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