Question

composition of first 20 elements with electron dristribution in various shells​

Answer 1

Answer:

1

H

hydrogen

1

2

He

helium

2

3

Li

lithium

2.1

4

Be

beryllium

2.2

5

B

boron

2.3

6

C

carbon

2.4

7

N

nitrogen

2.5

8

O

oxygen

2.6

9

F

fluorine

2.7

10

Ne

neon

2.8

11

Na

sodium

2.8.1

12

Mg

magnesium

2.8.2

13

Al

aluminium

2.8.3

14

Si

silicon

2.8.4

15

P

phosphorus

2.8.5

16

S

sulfur

2.8.6

17

Cl

chlorine

2.8.7

18

Ar

argon

2.8.8

19

K

potassium

2.8.8.1

20

Ca

calcium

2.8.8.2

Explanation:

hope it helps