A) Dipolar ion
B) Ion formed from amino acid
C) Internal salt
D) All of the above
Correct Answer: D
Solution :
\[\underset{\text{amino}\,\text{acid}}{\mathop{R-\underset{H}{\mathop{\overset{N{{H}_{2}}}{\mathop{\overset{|}{\mathop{\underset{|}{\mathop{C}}\,}}\,}}\,}}\,-COOH}}\,\underset{Zwitter\,acid}{\mathop{R-\underset{H}{\mathop{\overset{+N{{H}_{3}}}{\mathop{\overset{|}{\mathop{\underset{|}{\mathop{C}}\,}}\,}}\,}}\,-CO{{O}^{-}}}}\,\] The dipolar structure is commonly known as internal salt or Zwitter ion.
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