A certain isotope of manganese has 25 protons, 17 neutrons, and 25 electrons. What is the correct name for this isotope?

Question

Quizplus · Accepted Answer

If an atom has a different number of neutrons than protons, it is called an isotope. The correct way to identify an isotope is by its mass number, which is the number of protons and neutrons. Since this isotope of manganese has 25 protons and 17 neutrons, it is called manganese-42. We can also write manganese-42 as ⁴²Mn.

A Certain Isotope of Manganese Has 25 Protons, 17 Neutrons