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.