Question

fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table:
some ionic compounds
cation anion empirical formula name of compound
mg$^{2 + }$ o$^{2 - }$
sr$^{2 + }$ s$^{2 - }$
rb$^{+}$ br$^{-}$
k$^{+}$ f$^{-}$

Explanation:

Step1: Determine formula for Mg²⁺ and O²⁻

The charges of Mg²⁺ and O²⁻ are equal in magnitude. So the empirical formula is MgO.

Step2: Name compound for Mg²⁺ and O²⁻

The compound is magnesium oxide.

Step3: Determine formula for Sr²⁺ and S²⁻

The charges of Sr²⁺ and S²⁻ are equal in magnitude. So the empirical formula is SrS.

Step4: Name compound for Sr²⁺ and S²⁻

The compound is strontium sulfide.

Step5: Determine formula for Rb⁺ and Br⁻

The charge of Rb⁺ is 1+ and Br⁻ is 1-. So the empirical formula is RbBr.

Step6: Name compound for Rb⁺ and Br⁻

The compound is rubidium bromide.

Step7: Determine formula for K⁺ and F⁻

The charge of K⁺ is 1+ and F⁻ is 1-. So the empirical formula is KF.

Step8: Name compound for K⁺ and F⁻

The compound is potassium fluoride.

Answer:

cation	anion	empirical formula	name of compound
Sr²⁺	S²⁻	SrS	strontium sulfide
Rb⁺	Br⁻	RbBr	rubidium bromide
K⁺	F⁻	KF	potassium fluoride