Question

a compound formed between a metal and chlorine is called a _____
a compound formed between a metal and oxygen is called a _____
valency of copper is ____and _____
valency of iron is_____and _____
the valency of carbonate radical is ______
the valency of bicarbonate radical is ______
the formula of nitrate radical_____
the formula of sulphate radical______

Answer 1

1 ) metal chloride ( ionic bond )

2 ) metal oxide


3 ) Valency of copper is +2 and +3


4 ) Valency of iron is +2 and +3

5 ) carbonate radical -2 .

6 ) bicarbonate radical = -1

7 ) nitrite radical - 2


8 ) sulphate radical = - 2


hope it helps you !!
thanks !!

Ranjan kumar