MCQ
The $p - p$ orbital overlapping is present in the following molecule
- AHydrogen
- BHydrogen bromide
- CHydrogen chloride
- DChlorine
In the case of chlorine molecule, it is produced by the overlapping of the $3 p _z$ orbitals of two chlorine atoms.
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$I. n = 4,l = 2,m_l = -2, m_s = -1/ 2$
$II. n = 3,l = 2, m_l = 1,m_s = +1/ 2$
$III. n = 4,l = 1, m_l = 0, m_s = +1/ 2$
$IV. n = 3,l = 1, m_l = 1; m_s = -1/ 2$
The correct order of their increasing energies will be