MCQ
The emission spectrum of hydrogen is found to satisfy the expression for the energy change. $\Delta E$ (in joules) such that $\Delta E = 2.18 \times 10\left( {\frac{1}{{n_1^2}} - \frac{1}{{n_2^2}}} \right)\,\,J$ where ${n_1}$ $= 1, 2, 3$….. and ${n_2}$ $= 2, 3, 4…….$ The spectral lines correspond to Paschen series to
- A${n_1} = 1$ and ${n_2} = 2,\,\,3,\,\,4$
- ✓${n_1} = 3$ and ${n_2} = 4,\,\,5,\,\,6$
- C${n_1} = 1$ and ${n_2} = 3,\,\,4,\,\,5$
- D${n_1} = 2$ and ${n_2} = 3,\,\,3,\,\,5$
