MCQ
Which of the following is paramagnetic ?
- A$NO^+$
- B$CO$
- C$O_2^-$
- ✓$CN^-$
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As the $s-$ character of a hybrid orbital decreases
$(I)$ The bond angle decreases $(II)$ The bond strength increases
$(III)$ The bond length increases $(IV)$ Size of orbitals increases

$I . C H_{3}^{+}$ $II.$ $H_{3} O ^{+}$ $III.$ $N H_{3}$ $I V\,\, C H_{3}^{-}$
if $T_1 < T_2$ then $X$ and $Y$ respectively are