Show that radius fo (II) shell fo H- atom is almost four times fo (I) shell .

The ratio of radii of first shell of H atom and that of fourth shell of He^(+) ion is

The ratio of radii of first shell of H atom and that of fourth shell of He^(+) ion is

Number of times radius of the 3rd shell of the H-atom as compared to that of radius of first shell is

What is the nergy difference ( in kJ mol^(-1) ) between the first and second shell fo H-atom if the first emission in the Lyman series occurs at lambda = 121.5 nm ?

What is the maximum first four shells of an atom ?

What is the ratio of wavelength of (II) line fo Balmer series and (I) line fo Lyman seies ?

H -atom have infinite shells , write total number fo shells which does not contain f- subshell .

The distance between the directrices fo an ellipse is four times the distance between their foci. Then the ecentricity fo the ellipse is

An electron jumps form 5^(th) sehell to 2^(th) shell . How many state fo transition are possinle ?