Structure of Atom

What is the total number of electrons present in completely filled 3s, 3p, and 3d subshell having same value of magnetic quantum number?

Calculate the de-Broglie wavelength of an electron having velocity $1000\ \text{ms}^{-1}$ [$h = 6.626 \times 10^{-34}\ \text{js}$, mass of an electron $= 9.1 \times 10^{-31}\ \text{kg}$]

Visible light has a wavelength of $700$ nm. Calculate its frequency in hertz.

How many total number of s and p electrons are respectively present in $\text{Cl}^-$ ?

Find the wave number of the $4^{\text{th}}$ line in the Lyman series of H spectrum. (R $=$ Rydberg constant)

Calculate the wavelength, wavenumber of photon having its energy $8.0 \times 10^{-19}\ \text{J}$. $[h = 6.626 \times 10^{-34}\ \text{J s},\ C = 3.0 \times 10^8\ \text{m s}^{-1}]$

- $2 p_{x}$ atomic orbital undergoes linear combination with

Which of the following pairs of $d-$orbitals will have the electron density along the axis?

The potential energy $(y)$ curve for $H_{2}$ formation asa function of internuclear distance $(x)$ of the $H$ atomsis shown below. The bond energy of $H_{2}$ is :

If radius of second Bohr orbit of the $\mathrm{He}^{+}$ion is $105.8\mathrm{pm}$, what is the radius of third Bohr orbit of $\mathrm{Li}^{2+}$ ion?

Which one of the following statementsis wrong?

The angular momentum of electron in $d$-orbital is equal to