# How would I write an ionic equation to show the formation of ions from sulfur, calcium and arsenic?

May 16, 2018

Well we would assign oxidation states of...$S \left(- I I\right) , C a \left(+ I I\right) , A s \left(- I I I\right)$ respectively....

#### Explanation:

And so formally we could write....

$S + 2 {e}^{-} \rightarrow {S}^{2 -}$

$C a \rightarrow C {a}^{2 +} + 2 {e}^{-}$

$A s + 3 {e}^{-} \rightarrow A {s}^{3 -}$

Of course these are individual redox reactions...