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

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

The radius of the second Bohr orbit is

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

If the radius of the second orbit in hydrogen atom is R then radius of the third orbit is ........