MCQ
Select correct about the following change

$NO_2^+ \to NO_2 \to NO_2^-$

  • A
    Increase of $N-O$ bond order
  • Decrease of $O-N-O$ bond angle
  • C
    Decrease of $N-O$ bond length
  • D
    All of the above

Answer

Correct option: B.
Decrease of $O-N-O$ bond angle
b

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The following reaction is suppose to take place through ${{S}_{{{N}^{1}}}}$ mechanism

$\mathop {\begin{array}{*{20}{c}}
{{\mkern 1mu} {\mkern 1mu} Ph}\\
|\\
{C{H_3} - C - OH}\\
|\\
{{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_2} - C{H_3}{\mkern 1mu} {\mkern 1mu} }
\end{array}}\limits_{{\rm{'D'}}} $ $\xrightarrow{{HI}}$ products

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$\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad$(major product)