The enegry level diagram for an hydrogen-like atom is shown in the figure. The radius of its first Bohr orbit is

For hydrogen atom, radius of first Bohr orbit would be

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

Radius of first bohr's orbit of hydrogen atom is 0.53 A then the radius of 3^(rd) bohr orbit is :-

If the radius of 1st Bohr orbit in hydrogen atom is 0.5 A^@ 'then radius of 3rd Bohr orbit is

When hydrogen atom is in its first excited level, its radius is ______ of the Bohr radius.

The radius of first Bohr orbit of hydrogen atom is 0.53Å . Then the radius of first Bohr-orbit of mesnoic atom (negative meson has mass 207 times that of electron but same charge) is:

The radius of 1^(st) Bohr's orbit for hydrogen atom is 'r'. The radius of second Bohr's orbit is