If an element has 15 protons and 16 neutrons and 15 electrons,what is the mass number of the element?
A)31
B)15
C)16
D)30
E)none of the above

Question

Quizplus · Accepted Answer

The mass number of an element is the sum of its protons and neutrons. In this case, the element has 15 protons and 16 neutrons, so its mass number is 15 + 16 = 31. Choice A is the only option that matches this calculation.

If an Element Has 15 Protons and 16 Neutrons and 15