Question

Which statement is true about two isotopes of the same element?

They have the same mass number.
They have different numbers of protons.
They have different locations on the periodic table.
They have different numbers of neutrons.

Answer 1

The answer is that they will have a different amount of neutrons

Step-by-step explanation:

The reason being is that isotopes don't ever have a fixed number of neutrons within an atom's nucleus. It would always vary, regardless of the element.

Answer 2

I think the correct answer from the choices listed above is the last option. The statement that is true about two isotopes of the same element would be that they have different number of neutrons. They the same atomic number and position in the periodic table and nearly identical chemical behavior but with different atomic masses and physical properties.