The quantum number '$n$' for a free gaseous atom is associated with which of the following?

  • A
    Effective size of the orbitals
  • B
    Shape of the orbitals
  • C
    Spatial orientation of the orbitals
  • D
    Energy of the orbitals in the absence of a magnetic field

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The magnetic quantum number $m_l$ is determined by the azimuthal quantum number $l$. If $l = 2$,what are the type and number of orbitals indicated?

$d_{z^2}$ orbital has :

The electronic configuration (outermost) of $Mn^{2+}$ ion (atomic number of $Mn = 25$) in its ground state is

Which set of quantum numbers is not possible from the following?

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