Question

Which of the following is an incorrect match ?

• A. $ClO^-_3$, $sp^2$
• B. $SO^{2-}_4$, $sp^3$
• C. $NO^-_3$, $sp^2$
• D. $ClO^-_4$, $sp^3$

Answer 1

Answer: (A)

$X= \frac{1}{2}[VE +MA -c +a] $
where, $X =$ No. of hybrid orbitals.
$VE =$ No. of valence electrons of the central atom
$MA =$ No. of monovalent atoms/groups surrounding the central atom.
$c$ = charge on the cation
$a $= charge on the anion
$ClO_{3}^{-} ; X= \frac{1}{2}\left[7+0-0+1\right] = 4 , sp^{3}$
$ NO_{3}^{-} ; X = \frac{1}{2}\left[5+0-0+1\right]= 3 , sp^{2} $
$SO_{4}^{2-} ; X = \frac{1}{2}\left[6+0-0+2\right] =4, sp^{3} $
$ ClO_{4}^{-} ; X = \frac{1}{2}\left[7+0-0+1\right] = 4 , sp^{3}$