Question

An atomic scientist was studying an atom and through experimentation found that the total negative charge of the area surrounding the nucleus is -9. Which statement correctly describes this atom?
This atom has nine clouds.
This atom has nine electrons.
This atom has nine neutrons.
This atom has nine protons.

Answer 1

The atom has nine electrons because electrons have a negative charge, while protons have post it I and neutrons have neutral.

Answer 2

Answer: Option (b) is the correct answer.

Explanation:

Every atom consists of three sub-atomic particles which are protons, neutrons and electrons.

Inside the nucleus of an atom, there will be only protons and neutrons. Whereas electrons revolve around the nucleus of an atom.

Protons have a positive charge, neutrons have no charge and electrons have a negative charge.

So, when the given atom has a total negative charge of the area surrounding the nucleus is -9. Then it means there are nine electrons present in the atom because a negative charge is contained.

Thus, we can conclude that the statement this atom has nine electrons, correctly describes this atom.