Calculate the number of neutrons, protons and electrons
(i) atomic number \(3\) and mass number \(7\).
(ii) atomic number \(92\) and mass number \(238\).
(I) Atomic number \(=\) \(3\)
Mass number \(=\) \(7\)
So, number of electrons (or) number of protons \(=\)
Mass number \(=\) Number of protons \(+\) Number of neutrons
So, number of neutrons \(=\)
(ii) Atomic number \(=\) \(92\)
Mass number \(=\) \(238\)
So, number of electrons (or) number of protons \(=\)
Mass number \(=\) Number of protons \(+\) Number of neutrons
So, number of neutrons \(=\)