Which of the following is not a correct statement?
1. | The electron-deficient molecules can act as Lewis acids. |
2. | The canonical structures have no real existence. |
3. | Every AB5 molecule does in fact have a square pyramidal structure. |
4. | Multiple bonds are always shorter than corresponding single bonds. |
The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is:
1. 2
2. 3
3. 4
4. 1
Which of the following is not isostructural with SiCl4?
1.
2.
3.
4.
Which of the following is the most basic oxide?
1.
2.
3.
4.
Which of the following species has a linear shape?
1.
2.
3.
4.
In which of the following molecules are all the bonds not equal?
1. | ClF3 | 2. | BF3 |
3. | AlF3 | 4. | NF3 |
In which of the following pairs, the two species are iso-structural?
1.
2.
3.
4.
The correct order of C-O bond length among CO, , CO2 is:
1.
2.
3.
4.
The correct order of increasing bond order among the given is -
1.
2.
3.
4.
The correct order of increasing bond angles in the following triatomic species is:
1.
2.
3.
4.