The incorrect structure of glucine at given pH are-

Options

A. `H_(2)overset(o+)(N)CH_(2)-underset(O)underset(||)(C)-OH` at `pH = 2.0`
B. `H_(2)overset(o+)(N)CH_(2)-underset(O)underset(||)(C)-O^(ɵ)` at `pH = 6.0`
C. `H_(2)NCH_(2)-underset(O)underset(||)(C)-O^(ɵ)`at `pH = 9`
D. `H_(2)NCH_(2)-underset(O)underset(||)(C)-OH` at `pH = 12`

Answer

D

Explanation

At acidic pH, glycine will convert to cation and at basic pH glycine will convert to anion.