Neutrons.
Isotopes are atoms of the same elements with different number of neutrons.
Isotopes are atoms of the same element, having the same number of protons but different number of neutrons.
They are called isotopes,
elements are isotopes, when different atoms of the same element have different number of neutrons
Isotopes. They differ in the number of neutrons in the nucleus.
isotopes
Isotopes are atoms of the same elements with different number of neutrons.
Different elements with same number of neutrons are known as isotones.
Isotopes are atoms of the same element, having the same number of protons but different number of neutrons.
Isotopes are atoms of a given element that have the same number of protons but a different mass number and therefore a different number of neutrons.
Atoms have isotopes: it is true, the isotopes of the same element have different number of neutrons.
They are called isotopes,
elements are isotopes, when different atoms of the same element have different number of neutrons
Isotopes. They differ in the number of neutrons in the nucleus.
Isotopes are atoms of the same element but with a different number of neutrons.
They are isotopes of each other.
If two atoms are isotopes, it means they have the same number of protons but different numbers of neutrons. Thus, they have the same atomic numbers, but different atomic masses.