The correct order of the boiling points of \(\mathrm{H}_2 \mathrm{O}, \mathrm{HF}, \text{ and} \ \mathrm{NH}_3\) is:
1. HF > H2O > NH3
2. H2O > HF > NH3
3. NH3 > HF > H2O
4. NH3 > H2O > HF
In ion, the number of bond pairs and lone pairs of electrons exhibited by nitrogen atom is:
1. 2, 2
2. 3, 1
3. 1, 3
4. 4, 0
The number of bonds and bonds in the following structure is :
1. | 6, 19 | 2. | 4, 20 |
3. | 5, 19 | 4. | 5, 20 |
Hydrogen bond will be strongest in :
1. HCl
2. H2O
3. HI
4. H2S
If the electronic configuration of an element is , the four electrons that participate in the chemical bond formation will be from :
1.
2.
3.
4.
The correct bond angle for \(\mathrm{sp}^2\) hybridization is:
1. | \(90^\circ\) | 2. | \(120^\circ\) |
3. | \(180^\circ\) | 4. | \(109^\circ\) |
The electronic configurations of the elements A, B, and C are given below.
The stable form of A may be represented by the formula:
1. | A | 2. | A2 |
3. | A3 | 4. | A4 |
Among the following, the correct order of energies of molecular orbitals of N2 is-
1.
2.
3.
4.
From the perspective of molecular orbital theory, which statement is false?
1. is not a stable molecule.
2. is not stable but is expected to exist.
3. Bond strength of is maximum amongst the homonuclear diatomic molecules belonging to the second period.
4. The order of energies of molecular orbitals in molecule is:
The shape of AsF5 is:
1. | Pentagonal bipyramidal. | 2. | Trigonal bipyramidal. |
3. | Distorted tetrahedral. | 4. | Square pyramidal. |