• # question_answer Which is the decreasing order of stability [IIT-JEE (Screening) 1993] (i) $C{{H}_{3}}-\overset{+}{\mathop{C}}\,H-C{{H}_{3}}$ (ii) $C{{H}_{3}}-\overset{+}{\mathop{C}}\,H-O-C{{H}_{3}}$ (iii) $C{{H}_{3}}-\overset{+}{\mathop{C}}\,H-CO-C{{H}_{3}}$ A) $(i)<(ii)<(iii)$ B) $(i)>(ii)>(iii)$ C) $(iii)>(ii)>(i)$ D)  $(ii)>(iii)>(i)$

$C{{H}_{3}}-\overset{\,\,\,+\,\,\,\,\,\,}{\mathop{\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,}{\mathop{CH}}\,}}\,}}\,\,>\,\,C{{H}_{3}}-\underset{OC{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,}{\overset{\,\,\,+\,\,\,\,}{\mathop{CH}}}\,\,\,\,\,}}\,>\,\,C{{H}_{3}}-\underset{COC{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{\,\,+\,\,\,\,}{\mathop{CH}}\,\,\,\,\,\,\,\,\,}}\,}}\,$