The total energy of an electron in the \(n^{th}\) stationary orbit of the hydrogen atom can be obtained by:
1. \(E_n = \dfrac{13.6}{n^2}~\text{eV}\)
2. \(E_n = -\dfrac{13.6}{n^2}~\text{eV}\)
3. \(E_n = \dfrac{1.36}{n^2}~\text{eV}\)
4. \(E_n = -{13.6}\times{n^2}~\text{eV}\)
For which one of the following Bohr model is not valid?
1. | Singly ionised helium atom \(\big(He^{+}\big)\). |
2. | Deuteron atom. |
3. | Singly ionised neon atom \(\big(Ne^{+}\big)\). |
4. | Hydrogen atom. |
Let \(L_1\) and \(L_2\) be the orbital angular momentum of an electron in the first and second excited states of the hydrogen atom, respectively. According to Bohr's model, the ratio \(L_1:L_2\) is:
1. \(1:2\)
2. \(2:1\)
3. \(3:2\)
4. \(2:3\)
1. | visible region |
2. | far infrared region |
3. | ultraviolet region |
4. | infrared region |
1. | \(-1.5~\text{eV}\) | 2. | \(-1.6~\text{eV}\) |
3. | \(-1.3~\text{eV}\) | 4. | \(-1.4~\text{eV}\) |