H.W (1): Calculate for the hydrogen atom (i) velocity of the electron in the ground state, (ii) radius of the orbit of the electron in the ground state, (iii) time taken for the electron to traverse the first Bohr orbit. H.W(2):- At what speed must the electron revolve round the nucleus of the hydrogen in its ground state in order that it may not be pulled into the nucleus by electrostatic attraction (Given: Radius of first Bohr orbit is 0.052 nm).