A) \[C{{H}_{3}}-{{(C{{H}_{2}})}_{8}}-CO\overset{-}{\mathop{O}}\,\,N{{a}^{+}}\]
B) \[C{{H}_{3}}{{(C{{H}_{2}})}_{11}}\overset{+}{\mathop{N}}\,{{(C{{H}_{3}})}_{3}}\overset{-}{\mathop{B}}\,r\]
C) \[C{{H}_{3}}-{{(C{{H}_{2}})}_{13}}-OSO_{3}^{-}N{{a}^{+}}\]
D) \[C{{H}_{3}}{{(C{{H}_{2}})}_{15}}\overset{+}{\mathop{N}}\,{{(C{{H}_{3}})}_{3}}\overset{-}{\mathop{B}}\,r\]
Correct Answer: D
Solution :
[d] Greater the surface area, greater the van der waal forces of attraction and therefore at lesser concentration micelle formation will take place. In case of \[C{{H}_{3}}{{(C{{H}_{2}})}_{15}}\overset{\oplus }{\mathop{N}}\,{{(C{{H}_{3}})}_{3}}B{{r}^{-}}\] due to greater chain length, greater will be van der waal forces.
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