Question

give the formula of compound in which both cation and anion are polyatomic​

Answer 1

Answer:

The cation is written first: sodium ion (Na+)

The anion is written last: carbonate ion (CO32-)

Combine them to form an electrically neutral compound:

Since the charges are not equal in magnitude the charge of sodium ion (+1) becomes the subscript for the carbonate ion. The charge of the carbonate ion (2-) becomes the subscript for the sodium ion.

The final formula is Na2CO3

Explanation:

sodium carbonate