Question

Name the sub-atomic particles present in an atom of Hydrogen.

Answer 1

According to the definition of Atomic Number(Z) and Mass number(A),

$\mathrm{Atomic}\mathrm{Number}\left(\mathrm{Z}\right)=\mathrm{Number}\mathrm{of}\mathrm{Electrons}\left(\mathrm{e}\right)=\mathrm{Number}\mathrm{of}\mathrm{Protons}\left(\mathrm{p}\right)$

$\mathrm{Mass}\mathrm{Number}\left(\mathrm{A}\right)=\mathrm{Number}\mathrm{of}\mathrm{Protons}\left(\mathrm{p}\right)+\mathrm{Number}\mathrm{of}\mathrm{Neutrons}\left(\mathrm{n}\right)$

1. Atomic Number of Hydrogen is 1
   Hence, Number of Electron = 1 and Number of Proton = 1
2. Mass number of Hydrogen is 1
   Since, the Number of Protons = 1, Number of Neutrons in Hydrogen = 0.
3. Hence, In Hydrogen Atom Two subatomic particles namely Electron and Proton are present.