Which of the following species contains three bond pairs and one lone pair around the central atom?
1. \(\text H_{2} \text O\)
2. \(\text{BF}_{3}\)
3. \(\text{NH}^-_2\)
4. \(\text{PCl}_{3}\)
The pair of species with the same bond order is:
1.
2.
3. \(\text {NO, CO}\)
4.
Which of the two ions from the list given below have the geometry that is explained by the same hybridisation of orbitals, ?
1.
2.
3.
4.
Which of the following has the minimum bond length?
1.
2.
3.
4.
Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has a high melting point?
1. Metallic bonding
2. Van der Waals' bonding
3. Ionic bonding
4. Covalent bonding
In which of the following pairs of molecules/ions, the central atoms have sp2 hybridization?
1.
2.
3.
4.
A molecule/ion among the following species that does not exist under normal conditions is:
1. \(Be^+_2\)
2. \(Be_2\)
3. \(B_2\)
4. \(Li_2\)
The correct order of increasing bond angles in the following species is:
1. \(C l_{2} O < C l O_{2} < C l O_{2}^{-}\)
2. \(C l O_{2} < C l_{2} O < C l O_{2}^{-}\)
3. \(C l_{2} O < C l O_{2}^{-} < C l O_{2}\)
4. \(C l O_{2}^{-} < C l_{2} O < C l O_{2}\)
In which one of the following species the central atom has the type of hybridization which is not the same as that present in the other three?
1.
2.
3.
4.
According to the MO theory, which of the following lists ranks the nitrogen species in terms of increasing bond order?
1.
2.
3.
4.