Which one of the following sets of quantum numbers is not possible for a $4p$ electron?

  • A
    $n=4, l=1, m=-1, m_{s}=+\frac{1}{2}$
  • B
    $n=4, l=1, m=0, m_{s}=+\frac{1}{2}$
  • C
    $n=4, l=1, m=2, m_{s}=+\frac{1}{2}$
  • D
    $n=4, l=1, m=-1, m_{s}=-\frac{1}{2}$

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Similar Questions

Which of the following sets of quantum numbers is not valid?

Match the column:
Column-$I$ Column-$II$
$A$. The orbital which has two angular nodes $P$. $4d_{x^2-y^2}$
$B$. The $d$ orbital with zero nodal plane $Q$. $3d_{z^2}$
$C$. The orbital with two radial nodes $R$. $4f$
$D$. The orbital with three angular nodes $S$. $3s$

Correct match will be $:-$

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An atom of an element contains $29$ electrons and $35$ neutrons. Deduce
$(i)$ the number of protons and
$(ii)$ the electronic configuration of the element.

Identify which of the following sets of quantum numbers are not possible and explain why.
$(a) n = 0, l = 0, m_l = 0, m_s = +1/2$
$(b) n = 1, l = 0, m_l = 0, m_s = -1/2$
$(c) n = 1, l = 1, m_l = 0, m_s = +1/2$
$(d) n = 2, l = 1, m_l = 0, m_s = -1/2$
$(e) n = 3, l = 3, m_l = 3, m_s = +1/2$
$(f) n = 3, l = 1, m_l = 0, m_s = +1/2$

Given below are two statements. One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$ : Energy of $2s$ orbital of hydrogen atom is greater than that of $2s$ orbital of lithium.
Reason $R$ : Energies of the orbitals in the same subshell decrease with increase in the atomic number.
In the light of the above statements,choose the correct answer from the options given below.

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