Question

make the chemical formula of sodium chloride and aluminium sulphate by using criss Cross method.​

Answer 1

Answer:

I think NaCl and Al so if I am correct so

Explanation:

u follow me

Answer 2

Answer:

Sodium Chloride:

Symbol of Sodium => Na

Valency of Sodium => +1

Symbol of Chlorine => Cl

Valency of Chlorine => -1

By criss cross method = Na x 1

= Cl x 1

So, the chemical formula is NaCl.

Aluminium Sulphate:

Symbol of Aluminum => Al

Valency of Aluminum => +3

Symbol of Sulphate => SO4

Valency of Sulphate => -2

By criss cross method = Al x 2

= SO4 x 3

So, the chemical formula is Al2(SO4)3