Question

An atomic scientist found that the total negative charge of the area surrounding the nucleus is -9. Which statement correctly describes this atom?

A) This atom has nine clouds.
B) This atom has nine electrons.
C) This atom has nine neutrons.
D) This atom has nine protons.

Answer 1

An atom is composed of a positively charged nucleus surrounded by negatively charged electrons. In a neutral atom, the total negative charge of the electrons is equal to the total positive charge of the protons in the nucleus. Therefore, if the total negative charge surrounding the nucleus is -9, it means that the atom has nine electrons.

Step-by-step explanation:

An atom is composed of a positively charged nucleus surrounded by negatively charged electrons. In a neutral atom, the total negative charge of the electrons is equal to the total positive charge of the protons in the nucleus. Therefore, if the total negative charge surrounding the nucleus is -9, it means that the atom has nine electrons.