First Bohr radius of an atom with Z=82 is r. radius its third orbit is

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

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

In Bohr.s model of hydrogen atom, radius of the first orbit of an electron is r_(0) . Then, radius of the third orbit is:

if an electron is revolving in its bohr orbit having bohr radius of 0.529Å , then the radius of third orbit is

if an electron is revolving in its bohr orbit having bohr radius of 0.529Å , then the radius of third orbit is