Question

Magnesium has atomic number 12.Write the number of electrons and protons that are present.what kind of ions will it form?write its formula.

Answer 1

Magnesium has atomic number=12

Number of electrons=12

Number of protons=12

Electronic configuration of Magnesium: $1s^2$ $2s^2$ $2p^6$ $3s^2$

On removal of 2 electrons from outermost shell it can attain inert gas configuration so it forms $M{g}^{2+}$ ion.

$Mg⟶{Mg}^{2+}+2e^{-}$