Question

if the element magnesium (mg) has 12 electrons it will also have: 12 protons; 12 neutrons; an atomic weight of 12 g.; 12 moles

Explanation:

Step1: Recall atomic - structure concept

In a neutral atom, the number of electrons is equal to the number of protons.

Step2: Analyze magnesium

Magnesium (Mg) with 12 electrons will have 12 protons to maintain electrical neutrality.

Answer:

12 protons