`99 %` of a radioactive element will decay between

Why do radioactive element decay?

Why do radioactive element decay?

The decay constant of a radioactive element is defined as the reciprocal of the time interval after which the number of atoms of the radioactive element falls to neraly

The decay constant of a radioactive element is defined as the reciprocal of the time interval after which the number of atoms of the radioactive element falls to neraly

The decay constant of a radioactive element is definded as the reciprocal of the time interval after which the number of atoms of the radioactive element falls to nearly

The decay constant of a radioactive element is defined as the reciprocal of the time interval after which the number of atoms of the radioactive element falls to nearly

The half life period of a radioactive element is 90 minutes. What percentage of radioactive element will be present after 6 hours of decomposition ?

The half - life period of radioactive element A is the same as the mean life time of another radioactive element B. Initially both of them have same number of atoms. The radioactive element B decays faster than A. Explain, why.

If the half lives of a radioactive element for alpha and beta decay are 4 year and 12 years respectively, then the percentage of the element that remains after 12 year will be