An atom's mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus?
A) 6
B) 19
C) 13
D) 7

Name: An atom's mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus? A) 6 B) 19 C) 13 D) 7
Brand: Quizplus
Rating: 4.7 (40 reviews)

Question

Quizplus · Accepted Answer

The number of neutrons in an atom's nucleus is found by subtracting the atomic number (number of protons) from the mass number. For this atom, 13 (mass number) - 6 (atomic number) = 7 neutrons.

An Atom's Mass Number Is 13 and Its Atomic Number