From kinetic theory, tell the dimension of an atom.
Show the trajectory of $\alpha -$ particle of different impact parameter and using it how did Rutherford determine the upper limit of the nuclear size ?
What is shown by Thomson's experiments of electric discharge through gases ? And explain the plum pudding model.
The ratio of ionization energy of Bohr's hydrogen atom and Bohr's hydrogen like lithium atom is
In third orbit of hydrogen atom, de Broglie wavelength of electron is $\lambda $ then radius of third orbit is
Why atoms are electrical neutral ?