An atom with a mass number of 58 and 32 neutrons will have ________ protons.
A)16
B)26
C)32
D)58
E)90

Question

Quizplus · Accepted Answer

The mass number of an atom is equal to the sum of its protons and neutrons. In this case, the mass number is given as 58 and the number of neutrons is 32. Therefore, the number of protons can be calculated as:

Number of protons = Mass number - Number of neutrons
Number of protons = 58 - 32
Number of protons = 26

Hence, the atom with a mass number of 58 and 32 neutrons will have 26 protons. The best choice is B.

An Atom with a Mass Number of 58 and 32