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. | \(-1.4~\text{eV}\) |
In which of the following systems will the radius of the first orbit (\(n=1\)) be minimum:
1. doubly ionized lithium
2. singly ionized helium
3. deuterium atom
4. hydrogen atom
1. | \(4E_n\) | 2. | \(\dfrac{E_n}{4}\) |
3. | \(2E_n\) | 4. | \(\dfrac{E_n}{2}\) |