MCQ
Incorrect stability order is
  • A
    $\mathop {P{h_3}C}\limits^{\,\,\,\,\,\,\,\,\,\,\,\,\, \oplus }  > \mathop {P{h_2}CH}\limits^{\,\,\,\,\,\, \oplus }  > Ph - \mathop {C{H_2}}\limits^{ \oplus \,\,\,\,\,\,\,\,\,} $
  • $\mathop {P{h_3}C}\limits^{{\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} \Theta {\kern 1pt} {\kern 1pt} {\kern 1pt} }  < \mathop {P{h_2}CH}\limits^{{\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} \Theta }  < Ph - \mathop {C{H_2}}\limits^{\Theta {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} } $
  • C
    $\mathop {P{h_3}C}\limits^{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \odot }  < \mathop {P{h_2}CH}\limits^{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \odot \,\,\,\,\,}  < Ph > \mathop {Ph - C{H_2}}\limits^{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \odot \,\,\,\,\,\,\,\,\,} $
  • D
    $\mathop {P{h_3}C}\limits^{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\Theta }  < \mathop {P{h_2}CH}\limits^{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\Theta \,\,\,\,\,}  < Ph > \mathop {Ph - C{H_2}}\limits^{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\Theta \,\,\,\,\,\,\,\,\,} $

Answer

Correct option: B.
$\mathop {P{h_3}C}\limits^{{\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} \Theta {\kern 1pt} {\kern 1pt} {\kern 1pt} }  < \mathop {P{h_2}CH}\limits^{{\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} \Theta }  < Ph - \mathop {C{H_2}}\limits^{\Theta {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} } $
b
$\mathop {P{h_3}C}\limits^{{\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} \Theta }  < \mathop {P{h_2}CH}\limits^{{\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} \Theta {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} }  > \mathop {Ph - C{H_2}}\limits^{{\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} \Theta {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} } $ is wrong order.

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