Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is $$1s^{2} 2s^{2} 2p^{3}$$, the simplest formula for this compoundis

A

$$Mg_{3}X_{2}$$

B

$$Mg_{2} X$$

C

$$MgX_{2}$$

D

$$Mg_{2}X_{3}$$