If radius of second stationary orbit (in Bohr's atom) is R. Then radius of third orbit will be :-

If radius of third stationary orbit (in Bohr's atom) is R. Then radius of fourth orbit will be

The radius of electron's second stationary orbit in Bohr's atom is R . The radius of the third orbit will be

If the radius of the first Bohr orbit of H atom is 0.5Å , the radius of third orbit will be

The radius of second Bohr's orbit is

If the radius of 2^(nd) Bohr orbit of hydrogen atom is r_(2) .Then the radius of third Bohr orbit will be :-

The radius of first Bohr orbit in H-atom is 0.53 Å. The radius of third orbit is

If the radius of the second Bohr of hydrogen atom is r_(2) the radius of the third Bohr orbit will be