Orbitals and Quantum Numbers

IMPORTANT

Orbitals and Quantum Numbers: Overview

This topic covers concepts, such as, Quantum Numbers, Principle Quantum Number, Spin Quantum Number & Energy of a Sub-shell etc.

Important Questions on Orbitals and Quantum Numbers

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

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

EASY
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Consider the following sets of quantum numbers :

  n 1 m s
(i) 3 0 0 +12
(ii) 2 2 1 +12
(iii) 4 3 -2 -12
(iv) 1 0 -1 -12
(v) 3 2 3 +12

which of the following sets of quantum number is not possible ?

EASY
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The orientation of an atomic orbital is governed by

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

n=3,  l=2, m=+2

MEDIUM
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In hydrogen atom, the degeneracy of the level with energy -RH9 is

MEDIUM
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The number of radial nodes, angular nodes of a 4f- orbital are respectively

EASY
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Which quantum number provides information about the shape of an orbital?

MEDIUM
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How many of these orbitals have maximum orbital angular probability distribution at an angle of 45° to the axial direction?

dxy, dx2-y2, dyz, dxz, dz2, px, py, pz, s

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

EASY
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To which orbital among the following may an electron having zero angular momentum belong? 

MEDIUM
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What is the correct set of four quantum numbers for the valence electrons of rubidium atom Z = 37?

MEDIUM
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The sub-shell that comes after the f sub-shell is called the g sub-shell. What is true for the g sub-shell?

EASY
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On which orbital angular momentum of an electron is independent?

EASY
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What is the maximum number of orbitals having n=5 and l=3?

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

HARD
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The correct set of four quantum numbers for the valence electron of rubidium (Z=37) is

MEDIUM
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Which set of quantum numbers is not possible?

MEDIUM
IMPORTANT

What is the maximum number of orbitals that can be identified with the following quantum numbers? n=3; l=l; ml=0;

HARD
IMPORTANT

For Principal quantum number n=4, the total number of orbitals having l=3 is