How to solve get the Valencia of the twenty elements
Answers
Answer:
The Valency and valence electrons of the first 20 elements are -
1) Hydrogen (H)
Valency: +-1, Valence electrons : 1
2) Helium (He)
Valency: 0, Valence electrons : 2
3) Lithium (Li)
Valency: +1, Valence electrons : 1
4) Beryllium (Be)
Valency: +2, Valence electrons : 2
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5) Boron (B)
Valency: +3, Valence electrons : 3
6) Carbon (C)
Valency: 4, Valence electrons : 4
7) Nitrogen (N)
Valency: -3, Valence electrons : 5
8) Oxygen (0)
Valency: -2, Valence electrons : 6
9) Fluorine (F)
Valency: -1, Valence electrons : 7
10) Neon (Ne)
Valency: 0 Valence electrons : 8
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11) Sodium (Na)
Valency: +1, Valence electrons : 1
12) Magnesium (Mg)
Valency: +2, Valence electrons : 2
13) Aluminium (Al)
Valency: +3, Valence electrons : 3
14) Silicon (Si)
Valency: 4, Valence electrons : 4
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15) Phosphorous (P)
Valency: -3 (also 3 and 5 ),Valence electron: 5
16) Sulphur (S)
Valency: -2, Valence electrons : 6
17) Chlorine (CI)
Valency: -1, Valence electrons : 7
18) Argon (Ar)
Valency: 0, Valence electrons : 8
19) Potassium (K)
Valency: +1, Valence electrons : 1
20) Calcium : +2, Valence electrons : 2
Answer:
using the formula 1s,2s 2p,3s 3p,4s.
Explanation:
by using this formula in which s=2 and p=6 we can find the valency of 20 elements.