Question

write the name of 1 to 20 elements and write its valency​

Answer 1

Answer:

hydrogen(h) , v=1

helium (he) , v= 0

lithium(li) , v= 1

Berelium(Be) ,v = 2

Boron(B) , v = 3

Carbon(C) , v = 4

Nitrogen(N) , v = 3

Oxygen(O), v = 2

Fluorine(F) , v = 1

Neon(Ne), v = 0

Sodium(Na), v = 1

Magnesium( Mg), v= 2

Aluminium(Al) , v = 3

Silicon(Si) , v= 4

Phosphorous(P) , v = 3

Sulphur(S) , v = 2

Chlorine(Cl) , v = 1

Argon(Ar) , v = 0

Potassium(K) , v = 1

Calcium(Ca) , v = 2

hope it helps you..

Answer 2

Answer:

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