Question

what is the number of electrons in mg atom and mg2+ ion

Answer 1

Atomic number=No. of electrons
•Mg atom contains 12 electrons
•And the mg2+ ion (ie losses 2 electrons) has 10 electrons

Answer 2

Explanation:

Magnesium is found in the 1st groups of the periodic table and it is a metal having high melting and the boiling point.

As we all know that Atomic number is always equal to the number of electrons.

So, Mg atom have the number of electrons equal to 12.

But mg2+which indicates that 2 of the electrons are removed from the atom so remaining electrons will be 10.