With respect to resonance structures of $\text{CO}_3^{2-}$ ion, which of the following statements are correct?
(a) All $\text{C}-\text{O}$ bonds in $\text{CO}_3^{2-}$ are equivalent
(b) There are three resonance structures possible for $\text{CO}_3^{2-}$ ion
(c) The position of carbon and oxygen should change in every resonance structure
(d) The formal charge on carbon atom is $-2$

In which of the following option/options, the order of arrangement does not agree with the variation of property indicated against it?
(a) $\text{BF}_3 > \text{NF}_3 > \text{NH}_3$ (Dipole moment)
(b) $\text{HgCl}_2 > \text{NH}_4^+ > \text{SF}_6$ (Bond angle)
(c) $\text{NH}_3 < \text{H}_2\text{O} < \text{HF}$ (Strength of intermolecular hydrogen bonding)
(d) $\text{H}-\text{I} > \text{H}-\text{Br} > \text{H}-\text{Cl}$ (Bond length)

The types of hybrid orbitals of nitrogen in $\text{NO}_2^+, \text{NO}_3^-$ and $\text{NH}_4^+$ respectively are

$$ \text { Match List-I with List-II and select the correct option: } $$

List-I (Molecule / ion)	List-II (Bond order)
$1.\mathrm{NO}$$1.\mathrm{NO}$1.NO	i. 15
$2.\mathrm{CO}$$2.\mathrm{CO}$2.CO	ii. 2.0
$3.{\mathrm{O}}_2^{-}$$3.{\mathrm{O}}_2^{-}$3.O_(2)^(-)	iii. 2.5
$4.{\mathrm{O}}_2$$4.{\mathrm{O}}_2$4.O_(2)	iv. 3.0