A reaction between a proton and $_8{O^{18}}$ that produces $_9{F^{18}}$ must also liberate
$_0{n^1}$
$_1{e^0}$
$_1{n^0}$
$_0{e^1}$
If the total binding energies of ${ }_1^2 H ,{ }_2^4 He ,{ }_{26}^{56} Fe$ and ${ }_{92}^{235} U$ nucleiare $2.22,28.3,492$ and $1786 MeV$ respectively, identify the most stable nucleus of the following.
Briefly explain the discovery of neutrons and how can it be demonstrated ?
From the relation $R=R_{0} A^{1 / 3},$ where $R_{0}$ is a constant and $A$ is the mass number of a nucleus, show that the nuclear matter density is nearly constant (i.e. independent of $A$).
Of the following pairs of species which one will have the same electronic configuration for both members?
How is an atom represented ? Why?