For balmer series in the spectrum of atomic hydrogen the wave number of each line is given by `barv=R_H(1/(n_1^2)-1/(n_2^2))`where `R_H` is a constant and `n_1` and `n_2` are integers. Which of the following statement is correct?
As wavelength decreases the lines in the series converge.
The integer `n_1` is equal to 2
(iii) The ionisation energy of hydrogen can be calculated from the wave number of these lines.
(iv) The line of longest wavelength corresponds to `n_2=3`

Options

A. I ii and iii
B. ii iii and iv
C. I ii and iv
D. ii only

Answer

C