Question

What is isotopy?

Answer 1

Isotopy is the phenomenon where two or more elements have the same number of neutrons in their atomic nuclei, but different numbers of protons, resulting in different atomic masses. This means that isotopes of the same element have the same atomic number (i.e., the same number of protons) but different mass numbers (i.e., the sum of protons and neutrons in the nucleus).

Answer 2

Is an existance of an atom with the same atomic number but different mass number

Answer 3

Atoms of the same element with the same atomic number but different mass number

Answer 4

Atoms with the same element and same atomic number but different mass number.

Answer 5

Atoms with the same element and same atomic number but different mass number.