They have different numbers of neutrons, which changes the Atomic Mass and nuclear properties.
Isotopes are atoms of the same elements with different number of neutrons.
Many elements have different isotopes: 1) Carbon - Carbon 12, Carbon 14 2) Hydrogen - Protium, Deuterium, Tritium 3) Chlorine - Chlorine 35, Chlorine 37 etc
elements are isotopes, when different atoms of the same element have different number of neutrons
Since you have isotopes of elements. Isotopes are elements with different number of neutrons hence why the different atomic masses for the same elements.
Yes, it is true.
Isotopes differ in the number of neutrons they possess.
The atomic number of the isotopes of an element is identical; the mass number is different.
Uranium has a number of isotopes including U235 and U238, both of which are radioactive
Isotopes of an element have different masses because their nuclei have different numbers of neutrons.
nuetrons
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Because of the difference in mass number. Isotopes must have different numbers of neutrons.