Quantum Mechanical Model of the Atom
Quantum Mechanical Model of the Atom: Overview
This topic covers concepts such as Limitations of Bohr Theory, Quantum Mechanical Model of Atom, de-Broglie's Equation: Dual Nature of Matter, Reasons for Failure of Bohr's Atomic Model, Schrodinger's Wave Equation, Significance of ψ, etc.
Important Questions on Quantum Mechanical Model of the Atom
The total number of atomic orbitals in the fourth energy level of an atom is :

A 0.66 kg ball is moving with a speed of 100 m/s. The associated wavelength will be

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

Consider the following sets of quantum numbers :
(i) | ||||
(ii) | ||||
(iii) | ||||
(iv) | ||||
(v) |
which of the following sets of quantum number is not possible ?

The orientation of an atomic orbital is governed by

The number of orbitals possible for the following quantum numbers is/are

The number of spherical nodes in 3p orbitals are

The electron was shown experimentally to have wave properties by

In hydrogen atom, the degeneracy of the level with energy is

How many of these orbitals have maximum orbital angular probability distribution at an angle of to the axial direction?

An element undergoes a reaction as shown:
energy released
If the energy released, is used to dissociate of molecules, equally into and , where is an excited state, in which the electron travels a path length equal to four times it's de-Broglie wavelength. Determine the least amount (in moles) of that would be required.
Given: I.E. of , Bond energy of .

The order of ionization energy

Total number of electrons in subshell is calculated by

For how many orbitals, the quantum numbers are possible?

Which of the following statements is/are correct?

Zeeman and Stark effects can be explained by _________________.

Stark and Zeeman effects can be explained by _________________.

de-Broglie's wavelength of an electron having kinetic energy is . Then, what is the value of ?

The de-Broglie wavelength of an electron travelling at percent of the speed of light was found to be . Then, what is the value of ''?

The ratio of the velocity of molecules to the velocity of molecules such that they are associated with de Broglie waves of the same wavelength is
