Embibe Experts Solutions for Chapter: Structure of Atom, Exercise 1: KVPY Aptitude Test - Stream SX 2018

If the velocity of the revolving electron of ${\mathrm{He}}^{+}$ in the first orbit $(\mathrm{n}=1)$ is $\mathrm{v},$ the velocity of the electron in the second orbit is:

The correct representation of wavelength intensity relationship of an ideal black body radiation at two different temperatures ${\mathrm{T}}_1$ and ${\mathrm{T}}_2$ is

The allowed set of quantum numbers for an electron in a hydrogen atom is

For a 4p orbital, the number of radial and angular nodes, respectively, are

${\mathrm{O}}^{2-}$ is isoelectronic with

Among the following, the set of isoelectronic ions is