MCQ
What is the shape of the $ClF_3$ molecule?
- ATrigonal planar
- BTrigonal pyramidal
- ✓$T-$ shaped
- DTetrahedral

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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