Figure 1 shows the line spectrum of hydrogen in Paschen series.

1093 nm
1282 nm
1875 nm
FIGURE 1

1-Draw the energy levels in a hydrogen atom.

2-Show the electron transitions which produce the lines in FIGURE 1.

3-State the region of the electromagnetic spectrum in which the line is found.

4-Calculate the energy (in kJ/mol) of the line with the lowest energy.
[8 marks]​