The mass density of a nucleus varies with mass number $A$ as
$A^2$
$A$
constant
$1/A$
A reaction between a proton and $_8{O^{18}}$ that produces $_9{F^{18}}$ must also liberate
Radius of the second Bohr obit of singly ionised helium atom is ......... $Å$
Who invented neutron ?
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 $A$).
Write the definition of $Z, A$ and $N$ by stating the structure of a atom.