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What is the principal quantum number? 

Important Questions on Atomic Structure

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Science>Chemistry>Atomic Structure>Quantum Numbers
The orbital angular momentum of an electron is 2s orbital is
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Science>Chemistry>Atomic Structure>Quantum Numbers
What is the maximum number of orbitals that can be identified with the following quantum number n=3, l=1, m=0?
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Science>Chemistry>Atomic Structure>Quantum Numbers
Consider the hypothetical situation where the azimuthal quantum number, l, takes values 0, 1, 2, ……..n + 1. Where n is the principal quantum number. Then, the element with atomic number:
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Science>Chemistry>Atomic Structure>Quantum Numbers
Which one of the following electronic arrangements is absurd?
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Science>Chemistry>Atomic Structure>Quantum Numbers
The correct set of four quantum numbers for the valence electrons of rubidium atom Z=37 is
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Science>Chemistry>Atomic Structure>Quantum Numbers
The difference between orbital angular momentum of an electron in a 4f-orbital and another electron in a 4s-orbital is
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Science>Chemistry>Atomic Structure>Quantum Numbers
The number of subshells associated with n=4 and  m=-2 quantum numbers is:
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Science>Chemistry>Atomic Structure>Quantum Numbers
The number of orbitals with n=5, m1=+2 is ________. (Round off to the Nearest Integer).
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Science>Chemistry>Atomic Structure>Quantum Numbers
Maximum number of electrons that can be accommodated in the subshell with azimuthal quantum number l=4 is.
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Science>Chemistry>Atomic Structure>Quantum Numbers
The quantum number of four electrons are given below:
I.  n=4, l=2, ml=–2, ms=–1/2
II.  n=3, l=2, ml=1, ms=+1/2
III. n=4, l=1, ml=0, ms=+1/2
IV. n=3, l=1, ml=1, ms=–1/2
The correct order of their increasing energies will be:
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Science>Chemistry>Atomic Structure>Quantum Numbers
The maximum number of electrons in an atom in which the last electron filled has the quantum numbers n=3, l=2 and m=-1 is
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Science>Chemistry>Atomic Structure>Quantum Numbers
The angular momentum of electron in d-orbital is equal to
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Science>Chemistry>Atomic Structure>Quantum Numbers
Among the following, the incorrect statement is
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Science>Chemistry>Atomic Structure>Quantum Numbers
Which of the following is an incorrect set of quantum members?
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Science>Chemistry>Atomic Structure>Quantum Numbers
The correct set of quantum numbers for the unpaired electron of Cu atom is :
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Science>Chemistry>Atomic Structure>Quantum Numbers
The Azimuthal quantum number for the valence electrons of Ga+ ion is (Atomic number of Ga=31)
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Science>Chemistry>Atomic Structure>Quantum Numbers
The correct set of quantum numbers for the unpaired election of chlorine atom is
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Science>Chemistry>Atomic Structure>Quantum Numbers
Among the following, the energy of 2s orbital is lowest in:
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Science>Chemistry>Atomic Structure>Quantum Numbers
Which of the following combination of statements is true regarding the interpretation of the atomic orbitals?

(A) An electron in an orbital of high angular momentum stays away from the nucleus than an electron in the orbital of lower angular momentum.

(B) For a given value of the principal quantum number, the size of the orbit is inversely proportional to the azimuthal quantum number.

(C) According to wave mechanics, the ground state angular momentum is equal to h2π .

(D) The plot of ψ Vs r for various azimuthal quantum numbers, shows peak shifting towards higher r value.
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Science>Chemistry>Atomic Structure>Quantum Numbers
Two electrons occupying the same orbital are distinguished by: