Atomic Physics

The energy levels of certain atom are represented in the following figure. During the transition from 2E to E level, a photon of wavelength $\lambda$ is emitted. The wavelength of photon produced during transition from…

The radius of the orbit of an electron in a hydrogen like atom is $4.5a_0$, where $a_0$ is the Bohr radius. Its orbital angular momentum is $\dfrac{3h}{2\pi}$. It is given than h is Planck's constant and R is Rydberg's…

An electron of mass '$m_e$' and charge '$e$' revolving around the nucleus in $n^{th}$ orbit has orbital magnetic moment $\dfrac{enh}{4\pi m_e}$ which is equal to Bohr Magneton, the orbit number in which electron should…

The ratio of ionization energy of a hydrogen atom in fifth excited state to second excited state is

A hydrogen atom in its ground state is irradiated by light of wavelength $1026\ \text{\AA}$. The electron gets excited to higher energy state $n$. Given the ground state energy is $-13.6\ \text{eV}$ and $hc = 1242\…

The ratio between the areas of Bohr's first three orbits of the hydrogen atom are

The ratio of angular frequency ($\omega$) of an electron to the total energy (E) of an electron in the first orbit of hydrogen atom is ($h$ is the Plank's constant)

When a hydrogen atom is raised from ground energy level to excited energy level, then

The radius of the smallest electron orbit in hydrogen-like ion is $\left(0.51 \times 10^{-10} / 4\right) \mathrm{m}$, then it is

The wavelength of the $k_a$ line for an element of atomic number 43 is $\lambda$. Then the wavelength of the $K_\alpha$ line for an element of atomic number 29 is

Continuous emission spectrum is produced by

The ionisation potential of hydrogen atom is 13.6 eV . How much energy need to be supplied to ionise the hydrogen atom in the first excited state?