For the Balmer series in the spectrum of H atom, ν̄= R_H {1/(n_1^2)-1/(n_2^2)}, the correct statements among (I) to (IV) are: (I) As wavelength…

For the Balmer series in the spectrum of H atom, $\displaystyle \bar{\nu}=\mathrm{R}_{\mathrm{H}}\left\{\frac{1}{\mathrm{n}_1^2}-\frac{1}{\mathrm{n}_2^2}\right\}$, the correct statements among (I) to (IV) are :

As wavelength decreases, the lines in the series converge

The integer $\displaystyle \mathrm{n}_1$ is equal to $\displaystyle 2$

The lines of longest wavelength corresponds to $\displaystyle \mathrm{n}_2=3$

The ionization energy of hydrogen can be calculated from wave number of these lines