Question

write molecular formula for calcium carbonate. ​

Answer 1

CaCO3

hope it will help

Answer 2

Question

write molecular formula for calcium carbonate. ​

Answer:

Calcium carbonate = $CaCo\left\atop{3}} \right.$

Explanation:

Here

Calcium formula is Ca and that has a valency of 3

Carbonate formula is Co and has a valency of 1

so

exchange the valency of the elements and write the formula by adjoining them

This is called criss Cross method

CALCIUM CARBONATE = CaCo3