Question

chart of first 20 elements of periodic table with their electronic and valence confugration

Answer 1

Hydrogen

1

Helium

2

Lithium

2,1

Beryllium

2,2

Boron

2,3

Carbon

2,4

Nitrogen

2,5

Oxygen

2,6

Fluorine

2,7

Neon

2,8

Sodium

2,8,1

Magnesium

2,8,2

Aluminum

2,8,3

Silicon

2,8,4

Phosphorous

2,8,5

Sulfur

2,8,6

Chlorine

2,8,7

Argon

2,8,8

Potassium

2,8,8,1

Calcium

2,8,8,2

Answer 2

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