If radium and chlorine combine to form radium chloride,the compound would be

The activity of a radioisotope changes with:

Which of the following is the most stable atom?

The measure of binding energy of a nucleus is the

Calculate the mass defect in the following nuclear reaction:
$_1H^2 + _1H^3 \to _2He^4 + _0n^1$
(Given: mass of $_1H^2 = 2.014 \ amu$,$_1H^3 = 3.016 \ amu$,$_2He^4 = 4.004 \ amu$,$_0n^1 = 1.008 \ amu$) (in $amu$)

Which one of the following nuclear reactions is not correct?