• # question_answer 25) The correct priorities for the substituents shown below, according to the E-Z sequence rule is I. $-CN$                                 II. $-CBr{{(C{{H}_{3}})}_{2}}$ III. $-COOH$                         IV. $-C{{H}_{2}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-OC{{H}_{3}}$ V. $V-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-H$ A)  $\text{II,III,V,I,IV}$                       B)  $\text{V,II,I,IV,III}$C)  $\text{III,IV,I,II,V}$                    D)  $\text{II,V,I,IV,III}$

(i) $-\underset{N}{\mathop{\underset{|}{\mathop{\overset{N}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-\underset{C}{\mathop{\overset{C}{\mathop{\underset{|}{\mathop{\overset{|}{\mathop{N}}\,}}\,}}\,}}\,,$                      (ii) $-\underset{Br}{\mathop{\underset{|}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}},$ (iii) $-\underset{O}{\mathop{\underset{|}{\mathop{\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-\underset{C}{\mathop{\underset{|}{\mathop{O}}\,}}\,,$                           (iv) $-\underset{H}{\mathop{\underset{|}{\mathop{\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-\underset{O}{\mathop{\underset{|}{\mathop{\overset{O-C}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-OC{{H}_{3}},$ (v) $-\overset{O\,}{\mathop{\overset{|}{\mathop{\underset{H}{\mathop{\underset{|}{\mathop{C}}\,}}\,}}\,}}\,\overset{-}{\mathop{-}}\,\overset{C}{\mathop{\overset{|}{\mathop{O}}\,}}\,$ Arrange $(NNN),\,\,(BrCC),\,\,(OOO),\,(CHH),\,\,(OOH)$ in increasing atomic number. The order is ii, iii, v, i, iv.