Embibe Experts Solutions for Chapter: Structure of Atom, Exercise 3: EXERCISE-II (Previous Year Questions)

The electronic configurations of $\mathrm{Eu}$ (Atomic No $63$), $\mathrm{Gd}$ (Atomic No $64$) and $\mathrm{Tb}$ (Atomic No $65$) are:

The total number of atomic orbitals in fourth energy level of an atom is

If $\mathrm{n}=6,$ the correct sequence for filling of the electrons will be:

The value of Planck’s constant is $6.63\times {10}^{-34}\mathrm{Js}$. The speed of light is$3\times {10}^{17}{\mathrm{nms}}^{–1}$. Which value is closest to the wavelength in nanometres of a quantum of light with a frequency of $6\times {10}^{15}{\mathrm{s}}^{-1}$?

What is the maximum number of electrons that can be associated with the following set of quantum numbers?

$\mathrm{n}=3, \mathrm{l}=1 \mathrm{and} \mathrm{m}=-1$

Two electrons occupying the same orbital are distinguished by

How many electrons can fit in the orbital for which $\mathrm{n}=3$ and $\mathrm{l}=1$?

Which one is the wrong statement?