Question

What’s an ionic compound for magnesium and oxide?

Answer 1

MgO

`{Mg}^( + 2) \: and \: {O}^( - 2) \\ form \: MgO`

Answer 2

Answer: The chemical formula for the ionic compound formed will be
`MgO`

Step-by-step explanation:

Magnesium is the 12th element of the periodic table having electronic configuration of
`[Ne]3s^(2)`

This element will loose 2 electrons and thus shows an oxidation state of +2 units.

Oxygen is the 8th element of the periodic table having electronic configuration of
`[He]2s^22p^4`

This element requires 2 electrons and thus shows an oxidation state of -2 units.

By criss-cross method, the oxidation state of the ions gets exchanged and hence, they form the subscripts of the opposite ion. This results in the formation of a neutral compound.

Thus, the chemical formula for the ionic compound will be
`MgO`