For the Balmer series in the spectrum of H atom, $\overline{\mathrm{v}}={\mathrm{R}}_{\mathrm{H}}\left\{\frac{1}{{\mathrm{n}}_1^2}-\frac{1}{{\mathrm{n}}_2^2}\right\}$ the correct statements among the given are
(l) wavelength increases, the lines in the series converge
(il) The integer n₁ is equal to 2
(lll) The lines of longest wavelength corresponds to n₂ = 3
(lV) The ionization energy of hydrogen can be calculated from wave number of these lines