Question

If two atoms have the same atomic numbers but different mass numbers, then they can be considered atoms of the same element.

True or False

Answer 1

Same elements can have different nuclei. So, true.

Answer 2

True.

Step-by-step explanation:

If two atoms have the same atomic number, they have the same number of protons in the nucleus.

The number of protons derermines the identity of an atom.

So, two atoms with the same atomic number are the same element.