The ratio of radius of 2nd and 3rd Bohr orbit is

The radius of second Bohr's orbit is

The ratio of the radius of the Bohr orbit for the electron orbiting the hydrogen nucleus that of the electron orbiting the deuterium nucleus is approximately

What is the ratio of radii of 3^"rd" and 2^"nd" orbit of hydrogen atom ?

Determine the ratio of perimeters in 2^(nd) and 3^(rd) Bohr orbit in He^(+) atom:

What is the radius of 2^(nd) Bohr orbit, given the radius of the first Bohr orbit is r?

Calculate the ratio of 4th Bohr's to 2nd Bohr's orbit of He^(+) ion.

For hydrogen atom, radius of first Bohr's orbit is a for Li^(2+) the radius of first Bohr's orbit is