Question

Select the correct option for following statements:
(I) $s{p}^3$ hybrid orbitals are at ${90}^{\circ }$ to one another
(II) $sp-d^2$ adjacent hybrid orbitals are at ${90}^{\circ }$ to one another
(III) $s{p}^2$ hybrid orbitals are at ${120}^{\circ }$ to one another
(IV) Bond order of $N-O$ bond in ${NO}_3^{-}$ is $\frac{1}{3}$

• A. TFTF
• B. TTFF
• C. FTTF
• D. FTFT

Answer 1

The correct option is C FTTF

I) ${SP}^3$ hybrid orbitals have an angle of ${109.5}^0$ [tetrahedral structure].

II) ${SP}^3{d}^2$ adjacent orbitals have an angle of ${90}^0$ among one another [octahedral]

III) ${SP}^2$ (trigonal planar) hybrid orbitals are at an angle of ${120}^0$ to one another.

IV) Bond order $=\frac{4}{3}$

$\therefore$ $\to C)$ F T T F