There is no specific number; each element has another number of natural and artificial isotopes.
Polonium is the element in group 16 that has unstable isotopes. It is a radioactive element with no stable isotopes.
An atom or element that have different masses are known as isotopes.
There is no limit as to how many isotopes an element can have. It can be given as many neutrons as possible with today's technology. As for stability and natural decay, that's another issue. Some isotopes can last for milliseconds, or less.
Isotopes contribute to the atomic weight of a chemical element.
Astatine, a radioactive element found in the halogen group, has at least 20 known isotopes. However, only one of these isotopes, Astatine-210, is considered stable. The other isotopes are unstable and undergo radioactive decay.
There is 13 isotopes in the element boron. xD
copper has 2 stable isotopes
Seaborgium (Sg) has 17 isotopes - including isomers and metastable isotopes.
29
It has 10
Dubnium is an artificial chemical element and hasn't stable isotopes.
29
Isotopes of the same element have different number of neutrons.
That depends on the isotope, as Argon has three different stable isotopes and many different radioactive isotopes.
Polonium is the element in group 16 that has unstable isotopes. It is a radioactive element with no stable isotopes.
Isotopes of the same element have a different number of neutrons.
An atom or element that have different masses are known as isotopes.