M K Verma Solutions for Chapter: Atomic Structure, Exercise 1: TOPICWISE QUESTIONS

Which of the following elements contain non-spherical electron density?

The ratio of the velocity of ${\mathrm{SO}}_2$ molecules to the velocity of ${\mathrm{O}}_2$ molecules such that they are associated with de Broglie waves of the same wavelength is

In a sample of hydrogen atoms, electrons de-excite from level '$\mathrm{n}$' to $1$. The total number of lines belonging to the Balmer series is $2$. If electrons are ionised from level '$\mathrm{n}$' by a photon of energy $13 \mathrm{eV},$ the kinetic energy will be:

The position of both an electron and a $\mathrm{He}$ atom is known within $1 \mathrm{nm}$ and the momentum of the electron is known within $50\times {10}^{-26}$ $\frac{\mathrm{Kg} \mathrm{m}}{\mathrm{s}}$. The minimum uncertainty in the measurement of the momentum of the $\mathrm{He}$ atom is:

The angular momentum of an electron in a particular orbit of a single-electron species is $3.17\times {10}^{-34} \mathrm{kg} {\mathrm{m}}^2 {\mathrm{s}}^{-1}$. The total number of possible unique values of $\mathrm{l}$ and $\mathrm{m}$, respectively, are:

Suppose that the spin quantum number could have three possible values. Then, which of the following atomic number would not represent a noble gas?

Match species given in the column-$\mathrm{I}$  with the electronic configuration given in column-$\mathrm{II}$.

In ${\mathrm{\psi }}_{321}$, the sum of orbital angular momentum, spherical nodes and the angular nodes is