Choose the correct option for the following molecule:

                                            

1. Non planar   

2. $\mu \ne 0$   

3. Both (1) and (2)     

4. $\mu =0$

Select the correct statement:

(a)$HS{O}_5^{-}$ ion has one $\mathrm{S}—\mathrm{O}—\mathrm{H}$ linkage

(b) Number of $\mathrm{B}—\mathrm{O}—\mathrm{B}$ linkages in Borax is equal to number of $\mathrm{P}—\mathrm{O}—\mathrm{P}$ linkages in ${\mathrm{P}}_4{\mathrm{O}}_{10}$

(c) Hybridization of both sulphur on $\left({\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_5\right)$ (pyrosulphurous acid) is name but oxidization state of both sulphur are different

(d) Tetra -Polyphosphoric has four $\mathrm{P}—\mathrm{O}—\mathrm{P}$ and no $\mathrm{P}—\mathrm{P}$ linkage

The H-O-H bond angles in $H_3{O}^{+}$ are approximately ${107}^{°}$. The orbitals used by oxygen in these bond are best describe as: 

1. $\mathrm{p<mspace\; width="1em"></mspace>}orbitals$

2. sp hybrid orbitals

3. $s{p}^2<mspace\; width="1em"></mspace>$hybrid orbital

4. $s{p}^3$ hybrid orbital

Which of the following molecular species is not linear?

(1) $(\mathrm{CN}{)}_2$                                                       

(2) ${\mathrm{OCN}}^{-}$

(3) ${\mathrm{XeF}}_2$                                                         

(4) ${\mathrm{S}}_3^{2-}$

Which of the following statements is correct about the \(\mathrm{I_3^+}\)​ and \(\mathrm{I_3^-}\)​ molecular ions?

The compound that has the highest ionic character associated with the X-Cl bond is:

1. ${\mathrm{PCl}}_5$ 

2. ${\mathrm{BCl}}_3$

3. ${\mathrm{CCl}}_4$

4. ${\mathrm{SiCl}}_4$

In which of the folllowing transformations, the bond order has increased and the magnetic behaviour has changed?

(a) ${\mathrm{C}}_2^{+}\to {\mathrm{C}}_2$                      (b) ${\mathrm{NO}}^{+}\to \mathrm{NO}$

(c) ${\mathrm{O}}_2\to {\mathrm{O}}_2^{+}$                       (d) ${\mathrm{N}}_2\to {\mathrm{N}}_2^{+}$

The bond having the highest bond energy is :

(1) C=C 

(2) C=S

(3) C=O

(4) P=N

H.O.M.O. (Highest Occupied Molecular Orbital) of CO molecular is :

(1) Non-bonding M.O. with slight antibonding character

(2) Non-bonding M.O. with slight bonding character

(3) Pure non-bonding M.O.

(4) None of the above

An incorrect match among the following is: