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 first orbit of hydrogen atom is 0.52 xx 10^(-8) cm. The radius of the first orbit of He^(+) ion is 0.26 xx 10^(-x) cm. Then the value of x is _______

The radius of the first orbit of hydrogen atom is 0.52 xx 10^-8 cm . The radius of the first orbit of He^+ ion is

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

If radius of first orbit of hydrogen atom is 5.29xx10^(-11) m, the radius of fourth orbit will be

If radius of first orbit of hydrogen atom is 5.29 ** 10^(-11) m , the radius of fourth orbit will be