NEET | 2018Atomic StructureHard

Question

Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is

Options

A.

Mg2X3

B.

MgX2

C.

Mg2X

D.

Mg3X2

Solution

Magnesium ion = Mg+2
X = Nitrogen                    Nitrogen ion = N–3

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