Question

An atom of magnesium has lost two electrons. it is known as a(n) ________. an atom of magnesium has lost two electrons. it is known as a(n) ________. cation molecule anion neutral atom isotope

Answer 1

Answer: Option (a) is the correct answer.

Step-by-step explanation:

Atomic number of magnesium is 12 and electrons are distributed in its shell as 2, 8, 2. So, in order to attain stability magnesium easily loses two electrons.

Therefore, there will be decrease in number of electrons as a result, a positive charge will occur and thus, a cation will be formed.

Thus, we can conclude that an atom of magnesium has lost two electrons. It is known as a cation.

Answer 2

The answer is cation.
there are two types of ions, positive ion or cation and negative ion or anion.
when an atom of magnesium loses two electrons, it gets positive charge +2. and when an ion has positive charge it is known as cation. And when an atom gains electron, it gets negative charge or also known as anion.