Question

The atomic no. a cation M2+ is 12. how many electrons are present in this ion

Answer 1

Answer:

10

Explanation:

Atomic number 12 means its Magnesium.

M2+ indicates it has lost two electrons

Therefore now the no of electrons are

12-2=10

Answer 2

Answer:

your answer is 10 electrons

Explanation:

An ion M2+ contains 10 electrons and 12 neutrons.