Half life of `.^24Na` is a900 minutes.What is its decay constant?

If the half life of radium is 1620 years then its decay constant is

A radioactive substance decays to [1/16^(th)] of its initial quantity in 108 minutes. Find its decay constant

Half life of .^18F is 110 minutes.What fraction of .^18F sample decays in 20 minutes?

Find the frequency constant and half life period of a first order reaction, if its rate constant and activation energy are 1.11xx10^(-4) s^(-1) and 39.3 kcal mol^(-1) at 300^@C.(R= 2 Cal//mol.K) .

A 3//4 of the original amount of radioisotope decays in 60 minutes.What is its half life?

The half life of "_38 ^90 Sr is 28 years. What is the disintegration rate of 15 mg of this isotope?

The half-life of a nuclear species ''^NX is 3.2 days calculate its:decay constant