Question

Are gadhawa 20 pe calcium ata hai 2,8,18 se Kar le valency 2 ayega Kya Bhai tu bhi​

Answer 1

Answer:

Hydrogen [H] -valency- 1

Helium [He]-valency-0

Lithium [Li]-valency-1

Beryllium [Be]-valency-2

Boron [B]-valency-3

Carbon [C]-valency-4

Nitrogen [N]-valency-3

Oxygen [O]-valency-2

Fluorine [F]-valency-1

Neon [Ne] -valency-0

Sodium [Na]-valency-1

Magnesium [Mg]-valency-2

Aluminium [Al]-valency-3

Silicon [Si]-valency-4

Phosphorus [P]-valency-3

Sulphur [S]-valency-2

Chlorine [Cl]-valency-1

Argon [Ar]-valency-0

Potassium [K]-valency-1

Calcium[ Ca]-valency-2

The number of valence electrons can be determined if you look at group number. group number → units digit → valence electrons.

Answer 2

The process of making yarn from fibres is called spinning. Fibres from a mass of cotton wool are drawn out and twisted. This brings the fibres together to form yarn.

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