The number of neutrons in an element is equal to _____.
A) the difference between its atomic mass and atomic number
B) the number of electrons in the element
C) the number of isotopes in the element
D) the sum of its electrons and protons
E) its atomic number

Question

Quizplus · Accepted Answer

The number of neutrons in an element is equal to the difference between its atomic mass and atomic number. This is because atomic mass represents the sum of protons and neutrons, and atomic number represents the number of protons. Therefore, subtracting the atomic number from the atomic mass gives the number of neutrons.

The Number of Neutrons in an Element Is Equal to _____