26
MCQ (Multiple Correct Answer)
Which of the following species have the same shape?
A
$\mathrm{CO}_2$
B
$\mathrm{CCl}_4$
C
$\mathrm{O}_3$
D
$\mathrm{NO}_2^{-}$
27
MCQ (Multiple Correct Answer)
Which of the following statements are correct about $\mathrm{CO}_3^{2-}$ ?
A
The hybridisation of central atom is $s p^3$
B
Its resonance structure has one $\mathrm{C}-\mathrm{O}$ single bond and two $\mathrm{C}=\mathrm{O}$ double bonds
C
The average formal charge on each oxygen atom is 0.67 units
D
All C$$-$$O bond lengths are equal
28
MCQ (Multiple Correct Answer)
Diamagnetic species are those which contain no unpaired electrons. Which among the following are diamagnetic?
A
$\mathrm{N}_2$
B
$\mathrm{N}_2^{2-}$
C
$\mathrm{O}_2$
D
$\mathrm{O}_2^{2-}$
29
MCQ (Multiple Correct Answer)
Species having same bond order are
A
$\mathrm{N}_2$
B
$\mathrm{N}_2^{-}$
C
$\mathrm{F}_2^{+}$
D
$\mathrm{O}_2^{-}$
30
MCQ (Multiple Correct Answer)
Which of the following statements are not correct?
A
NaCl being an ionic compound is a good conductor of electricity in the solid state
B
In canonical structure there is a difference in the arrangement of atoms
C
Hybrid orbitals form stronger bonds than pure orbitals
D
VSEPR theory can explain the square planar geometry of $\mathrm{XeF}_4$