write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Fe2+, V5+, F-, O2-

Question

aaronq · Answer

They're asking you to make compounds with two ions (1 cation and 1 anion) such that the charges are balanced.

For example, $Fe^{2+}$ has a 2+ charge and $F^-$ has a 1- charge. To make a compound from these you would need 1 $Fe^{2+}$  and 2 $F^-$ to balance the charges.

The formula would be $FeF_2$.

rushwr · Answer

Accordingly we can make V2O5

rushwr · Answer

$$OF _{2}$$

rushwr · Answer

$$FeO $$

aaronq · Answer

$\sf  OF_2$ wont work, they're both anions.

rushwr · Answer

but then that sort of a compound is available right? @aaronq

aaronq · Answer

it's possible to obtain that compound, but it with be with the cation $O^{2+}$.