Question

Which of the following is not a subatomic particle?
A) neutron B) ion C) electron D) proton

Answer 1

Answer:

The electrons are not subatomic particles

Answer 2

Answer:

The correct option is (B) Ion.

Explanation:

An atom consists of protons, neutrons, and electrons. These three entities are called subatomic particles.

An ion is a charged atom formed when it either gains electrons or loses electrons. When electrons are lost the ion is called a cation. When electrons are gained the ion is then called an anion.

Example 1- A sodium atom loses one electron to become a cation.

$Na$ → $Na^{+}+e^{-}$

Example 2- A chlorine atom gains one electron to become an anion.

$Cl+e^{-}$ → $Cl^{-}$