Question

Write the chemical formula of the following compounds (use criss-cross method ) :
1. Aluminium oxide
2. Cuprous chloride
3. Aluminium nitride
With explanation please....
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Answer 1

Answer:

AlO3

Cucl2

AlNiO3

Explanation:

just by remembering

Answer 2

Explanation:

HERE IS YOUR ANS

1) Aluminium oxide

VALENCY OF ALUMINUM = 3

VALENCY OF OXIDE = 2

Aluminium oxide

Al O

3 2

NOW DO CRISS CROSS

Aluminium oxide = Al203

2)Cuprous chloride

VALENCY OF CUPROUS = 1

VALENCY OF CHLORIDE = 1

Cuprous chloride

Cu Cl

1 1

NOW DO CRISS CROSS

Cuprous chloride = CuCl

3)Aluminium nitride

VALENCY OF ALUMINUM = 3

VALENCY OF NITRIDE = 3

Aluminium nitride

Al N

3 3

NOW DO CRISS CROSS( if VALENCY are same they get cancel)

Aluminium nitride = AlN

hope it will help u ✌️✌️