Question

8. Which of the following statements is true?a. Most of the atom's mass is made of the electrons in the nucleus.b.Most of the atom's mass is made of the electrons in the electron cloud.c. Most of the atom's mass is made of the protons in the nucleus.d. Most of the atom's mass is made of the protons and neutrons in the nucleus.

Answer 1

Answer

d. Most of the atom's mass is made of the protons and neutrons in the nucleus.

Explanation

The nucleus contains the majority of an atom's mass because protons and neutrons are much heavier than electrons, whereas electrons occupy almost all of an atom's volume.

Therefore, the only TRUE statement is the option:

d. Most of the atom's mass is made of the protons and neutrons in the nucleus.