Structure of Atom PYQs

Match List I with List II: Choose the correct answer from the options given below.

The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes n = 2 → n = 3 and n = 4 → n = 6 transitions, respectively, is

Match List I with List II. Choose the correct answer from the options given below:

The energy of an electron in the ground state $(n=1)$ for $\mathrm{He^+}$ ion is $-x\,J$, then that for an electron in $n=2$ state for $\mathrm{Be^{3+}}$ ion in J is:

The relation between $n_m$, ($n_m$ = the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal quantum number (l), is

Identify the incorrect statement from the following: Identify the incorrect statement from the following: Identify the incorrect statement from the following: Identify the incorrect statement from the following: Identify the incorrect statement from the following:

From the following pairs of ions which one is not an isoelectronic pair?

The number of protons, neutrons and electrons in ¹⁷⁵₇₁Lu, respectively, are

Orbital having 3 angular nodes and 3 total nodes is

In hydrogen atom, the de Broglie wavelength of an electron in the second Bohr orbit is given that Bohr radius $a_0 = 52.9\,\text{pm}$.

Which one is a wrong statement?

Which one is the wrong statement?

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

Which is the correct order of increasing energy of the listed orbitals in the atom of titanium? (Atomic number $Z = 22$)

Be²⁺ is isoelectronic with which of the following ions?

What is the maximum number of electrons that can be associated with the following set of quantum numbers: $n = 3$, $l = 1$ and $m = -1$?

Based on equation $$E=-2.178\times10^{-18}J\left(\frac{Z^2}{n^2}\right)$$ certain conclusions are written. Which of them is not correct?

The orbital angular momentum of a p-electron is given as:

According to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?

Maximum number of electrons in a subshell of an atom is determined by the following:

Which of the following is not permissible arrangement of electrons in an atom?

An electron in which orbit of lithium will have the same energy as an electron in the second orbit of hydrogen?

For a hydrogen atom, the frequency is given by ν = 3.3 × 10¹⁵[(1/2²) − (1/n²)]. If the wavelength of the emitted radiation is 6600 Å, what is the value of n?

Given: The mass of electron is 9.11 × 10⁻³¹ kg and Planck constant is 6.626 × 10⁻³⁴ Js. The uncertainty involved in the measurement of velocity within a distance of 0.1 Å is:

The orientation of an atomic orbital is governed by:

The energy of second Bohr orbit of the hydrogen atom is $-328\ kJ\ mol^{-1}$, hence the energy of fourth Bohr orbit would be: