Question

What specific radioactive isotope has a half life of 10 days?

Answer 1

in Other word the probability of a radioactive atom decaying within it's half life is 50%
for example the image on the right is a simulation of many identical atoms undergoing radioactive decay.

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Answer 2

Explanation:

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• Bismuth-209 is the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and a magic number of 126 neutrons, and an atomic mass of 208.9803987 amu (atomic mass units). Primordial bismuth consists entirely of this isotope.

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