Question

A charged body consists of an unequal number of electrons and protons i.e 10 and 12 respectively. The body can be made neutral by _________.

• A. adding 4 electrons
• B. removing 4 electrons
• C. adding 2 electrons
• D. removing 2 electrons

Answer 1

The correct option is C adding 2 electrons

A neutral body contains an equal number of positive (proton) and negative (electron) charges.
Here, number of protons are greater than electrons, so we need extra electrons to neutralize it.
Let, number of extra electrons required = x.
For neutral body,
Electrons = Protons
(10 + x) = 12
x = 2
Therefore, adding 2 electrons will neutralize the body.