Question

All atoms of the same element have the same:
a. number of protons. c. mass number.
b. number of neutrons. d. mass.

Answer 1

Answer:

All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms. For example, all helium atoms have two protons, and no other elements have atoms with two protons.

Answer 2

Question:

All atoms of the same element have the same:

Options:

(a) number of protons

(b) number of neutrons

(c) mass number

(d) mass

Correct Answer:

(a) number of protons ✔️

Explanation:

All atoms of a given element must have the same atomic number, they need not all have the same mass number. For example: some atoms of carbon (atomic number 6) have a mass number of 12, others have a mass number of 13, and still others have a mass number of 14.