Ionic formula practice #2

Provide the formula formed by Na & Cl. 

Provide the formula formed by Ba & Cl. 

Provide the formula formed by Ga & O. 

Provide the formula formed by Pb(IV) & F. 

Provide the formula formed by Zn & F. 

Provide the formula formed by Rb & sulfate. Don't forget bracket (parenthesis) if needed.

Provide the formula formed by Fe(II) & dichromate. Don't forget bracket (parenthesis) if needed.

Provide the formula formed by Cr(III) & chromate. Don't forget bracket (parenthesis) if needed.

Provide the formula formed by Sn(IV) & phosphate. Don't forget bracket (parenthesis) if needed.

Provide the formula formed by Co(III) & nitrite. Don't forget bracket (parenthesis) if needed.