" The radius of the fourth orbit of an atom is "0.64nm" .The radius of the "3" orbit of the atom is "-nm

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

The radius of the forst Bohr orbit of hydrogen atom is 0.59 Å . The radius of the third orbit of He^(+) will be

The radius of the first Bohr orbit of hydrogen atom is 0.529Å . The radius of the third orbit of H will be:

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

The radius of the first orbit of hydrogen atom is 0.52xx10^(-8)cm . The radius of the first orbit of helium atom is

The radius of the lowest orbit of the hydrogen atom is

The radius of the first orbit of H-atom is r. then the radius of the first orbit of Li^(2+) will be:

Radius of Bohr's orbit of hydrogen atom is