Question

what is the formula for carbon tetrafluoride? what is the formula for iron(iii) phosphate? what is the name of the compound with the formula xeo3? what is the name of the compound with the formula co(no2)3?

Explanation:

Step1: Determine carbon tetrafluoride formula

Carbon has a +4 oxidation state and fluorine has a - 1 oxidation state. To balance the charges, we need 4 fluorine atoms for 1 carbon atom. So the formula is $CF_{4}$.

Step2: Determine iron(III) phosphate formula

Iron(III) has a +3 oxidation state and phosphate ($PO_{4}^{3 -}$) has a - 3 oxidation state. The formula is $FePO_{4}$.

Step3: Name $XeO_{3}$

Xenon is the central atom and there are 3 oxygen atoms. The name is xenon trioxide.

Step4: Name $Co(NO_{2})_{3}$

Cobalt is the metal with a +3 oxidation state (since nitrite $NO_{2}^{-}$ has a - 1 oxidation state and there are 3 of them). The name is cobalt(III) nitrite.

Answer:

1. $CF_{4}$
2. $FePO_{4}$
3. Xenon trioxide
4. Cobalt(III) nitrite