Chemistry, asked by humayun8939, 9 months ago

electronic cofiguration of first 20 elements​

Answers

Answered by BihariSwag
73

H - 1s1

He - 1s2

Li - 1s2 2s1

Be - 1s2 2s2

B - 1s2 2s2 2p1

C - 1s2 2s2 2p2

N - 1s2 2s2 2p3

O - 1s2 2s2 2p4

F - 1s2 2s2 2p5

Ne - 1s2 2s2 2p6

Na - [Ne]3s1

Mg - [Ne] 3s2

Al - [Ne] 3s2 3p1

Si - [Ne] 3s2 3p2

P - [Ne] 3s2 3p3

S - [Ne] 3s2 3p4

Cl - [Ne] 3s2 3p5

Ar - [Ne] 3s2 3p6

K - [Ar] 4s1

Ca - [Ar] 4s2

Answered by Anonymous
3

Answer:

electronic cofiguration of first 20 elements

Element. Electronic configuration

K. L. M. N. (shell)

1) Hydrogen. 1

2)Helium. 2

3) lithium. 2. 1.

4)Beryllium. 2. 2.

5)Boron. 2. 3.

6) Carbon. 2. 4.

7)Nitrogen. 2. 5.

8) Oxygen. 2. 6.

9) Fluorine. 2. 7.

10)Neon. 2. 8.

11) Sodium. 2. 8. 1.

12) Magnesium. 2. 8. 2.

13) Aluminum. 2. 8. 3.

14) silicon. 2. 8. 4.

15) Phosphorus. 2. 8. 5.

16) Sulphur. 2. 8. 6.

17) Chlorine. 2. 8. 7.

18) Argon. 2. 8. 8.

19) Potassium. 2. 8. 8. 1.

20) Calcium. 2. 8. 8. 2.

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