Question

write 1 to 20 electronic configuration. Written

Answer 1

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ATOMIC NO. | ELECTRONIC CONFIGURATION
1 => 1 . (Hydrogen)
2 => 2. (Helium)
3 => 2,1 (Lithium)
4 => 2,2 (Beryllium)
5 => 2,3 (Boron)
6 => 2,4 (Carbon)
7 => 2,5 (Nitrogen)
8 => 2,6 (Oxygen)
9 => 2,7 (Fluorine)
10 => 2,8 (Neon)
11 => 2,8,1 (Sodium)
12 => 2,8,2 (Magnesium)
13 => 2,8,3 (Aluminium)
14 => 2,8,4 (Silicon)
15 => 2,8,5 (Phosphorus)
16 => 2,8,6 (Sulphur)
17 => 2,8,7 (Chlorine)
18 => 2,8,8 (Argon)
19 => 2,8,8,1 (Potassium)
20 => 2,8,8,2 (Calcium)




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Answer 2

1-1s^1

2-1s^2

3-1s^2 2s^1

4-1s^2 2s^2

5-1s^2 2s^2 2p^1

ans so on till 10-1s^2 2s^2 2p^6

11-1s^2 2s^2 2p^6 3s^1

12-1s^2 2s^2 2p^6 3s^2

13-1s^2 2s^2 2p^6 3s^2 3p^1

and so on till 18-1s^2 2s^2  2p^6 3s^2 3p^6

19-1s^2 2s^2  2p^6 3s^2 3p^6 3d^1

20-1s^2 2s^2  2p^6 3s^2 3p^6 3d^2