• # question_answer In the structure $^{1}{{H}_{3}}C-\underset{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{^{2}C-{{\,}^{3}}C{{H}_{2}}-{{\,}^{4}}C{{H}_{3}}}}\,}}\,}}\,}}\,$ Which one is quarternary carbon atom A) C - 1 B) C - 2 C) C - 3 D) C - 5

$^{1}C{{H}_{3}}-{{\,}^{2}}\underset{\begin{smallmatrix} | \\ \underset{6}{\mathop{C}}\,{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\, \end{smallmatrix}}{\overset{\begin{smallmatrix} \overset{5}{\mathop{C}}\,{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\, \\ | \end{smallmatrix}}{\mathop{C-{{\,}^{3}}C{{H}_{2}}\,}}}\,-\,{}^{4}C{{H}_{3}}$ $C-2$ is quaternary carbon because it is attached to 4 other carbon atoms.