Question

explanation about

RADICALS, MOLECULAR / CHEMICAL FORMULA and HOW TO WRITE THE

CHEMICAL FORMULA OF A COMPOUND including definitions and examples of the

first two topics and steps of the criss-cross method for writing chemical formula of a

compound.​ Plz help me

Answer 1

Answer:

Compounds : A ↘️ B

Valency : Of A ↖️ Of B

Explanation:

For A put valency of B and vice-versa

e.g. Compounds : Sodium(Na) and Sulphate(SO4)

Valency : Of Na = 1 and of SO4 = 2

So, the chemical formula for the compound Sodium Sulphate will be Na2SO4