Physics, asked by harshiharshitha1268, 3 months ago

electronic configuration of 1st 20 elements with atomic number, K,L,M,N Shell, valency

Answers

Answered by shezadiyan

Answer:

1.hydrogen

2.Helium

3.lithium

4.berillium

5.Boron

6.carbon

7.Nitrogen

8.Oxygen

9.fluorine

10.neon

Answered by sylveon789

Explanation:

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