Which one of the following statements is correct?
a. an electron has a negative electrical charge.
b. an electron has a neutral electrical charge.
c. an electron is much larger than an atom.
d. an electron is located inside the nucleus of an atom.

Option (A) is the correct answer.

Explanation:

An atom consists of three sub atomic particles. These particles are protons, electrons and neutrons.

Protons have a positive charge. Whereas neutrons have no charge. On the other hand, electrons have a negative charge.

Thus, we can conclude that out of the given options, an electron has a negative electrical charge is the correct statement.