will give medal
Why radioisotopes are also called unstable?

Question

will give medal
Why radioisotopes are also called unstable?

anonymous · Answer

Radioisotopes are unstable because they do not have the correct ratio, which varies element to element, of protons and neutrons to create a strong enough binding force to hold the nucleus together.

anonymous · Answer

And that's why they have half lives, the time taken for the radioactivity of a specified isotope to fall to half its original value

thomas5267 · Answer

Radioisotopes, as the name suggests, is radioactive.  The radioactivity arises from the decay of the isotope.  So a pure sample of a particular radioisotope will become more and more unpure because some of the isotope will be transformed to another isotope/elemnt.  Therefore, it is unstable.

anonymous · Answer

all of ur answers are correct guys... so...
to whom should i give medal?
too much confused :?