Question

Give the electron dot notation for Mg²⁺.

A) Mg: ••
B) Mg: •
C) Mg²⁺: •
D) Mg²⁺: ••

Answer 1

The correct electron dot notation for Mg²⁺ is none of the options given because it should show Mg²⁺ with no dots after losing its two valence electrons.

Step-by-step explanation:

The electron dot notation for Mg²⁺ reflects the ion's lack of valence electrons after magnesium donates its two valence electrons to achieve a noble gas configuration. In its ionic form, magnesium has a net charge of +2 due to the loss of these two electrons. The correct electron dot notation for a Mg²⁺ ion is therefore none of the options provided (A, B, C, and D), as there should be no dots representing valence electrons around the symbol for Mg²⁺. Instead, the notation is simply Mg²⁺ with no dots.