Question

Atomic number of mg is 12 and its mass number is 24.how many protons and electrons does a mg2+ ion have?

Answer 1

Answer:

no. of electrons = 10

no.of protons = 12

number of neutrons = 12

Explanation:

Answer 2

The number of protons and electrons in $Mg^{2+}$ ions are 12 and 10 respectively

Explanation:

An ion is formed when a neutral atom looses or gains electrons.

• When an atom looses electrons, it results in the formation of positive ion known as cation.
• When an atom gains electrons, it results in the formation of negative ion known as anion.

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

We are given:

An ion having symbol $Mg^{2+}$

Atomic number = Number of protons = 12

Charge = +2

Number of electrons = Number of protons - Charge = 12 - (+2) = 10

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