Identify the correct statements regarding Balmer series: The ware number of each line in the spectrum of atomic hydrogen is given by the equation $\overline{\mathrm{v}}={\mathrm{R}}_{\mathrm{H}}\left(\frac{1}{{\mathrm{n}}_1^2}-\frac{1}{{\mathrm{n}}_2^2}\right).$ where ${\mathrm{R}}_{\mathrm{H}}$ is a constant and ${\mathrm{n}}_1$ and ${\mathrm{n}}_2$ are integers.
(i) As ware length decreases, the lines in the series converge
(ii) The integer ${\mathrm{n}}_1$ is equal to $2$
(iii) The ionization energy of hydrogen can be calculated from the wave number of these lines
(iv) The line of longest wavelength corresponds to ${\mathrm{n}}_2=3$