Which statement about the half-life of a radioactive sample is true?
O It is an exact measure of the decay of an individual atom.
O It measures the tendency of a radioisotope to decay radioactively
O It is affected by the concentration of the radioactive substance that is present
It can be calculated based on neutron number

Explanation:

The half life period of any radio active substance is the time required to decay half of its total quantity . Thus it measures the tendency of a radioactive substance to decay .

It is independent of the original quantity of matter present .

B

Explanation:

edg

an energy transformation flow diagram is shown

where is it ?

answer: 31, 5556. 952 seconds