Which of the following is not isostructural with SiCl4?
1. SCl4SCl4
2. SO2-4SO2−4
3. PO3-4PO3−4
4. NH+4NH+4
A diatomic molecule, among the following species, that only has ππ bonds according to the Molecular Orbital Theory (MOT) is:
1. | Be2 | 2. | O2 |
3. | N2 | 4. | C2 |
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 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. |
Which of the following species has a linear shape?
1. NO-2NO−2
2. SO2SO2
3. NO+2NO+2
4. O3O3
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. SF4 and XeF4SF4 and XeF4
2. SO2-3 and NO-3SO2−3 and NO−3
3. BF3 and NF3BF3 and NF3
4. BrO-3 and XeO3BrO−3 and XeO3
The correct order of C-O bond length among CO, CO2-3CO2−3 , CO2 is:
1. CO2<CO2-3<COCO2<CO2−3<CO
2. CO<CO2-3<CO2CO<CO2−3<CO2
3. CO2-3<CO2<COCO2−3<CO2<CO
4. CO<CO2<CO2-3CO<CO2<CO2−3
The correct order of increasing bond order among the given is:
1. O-2O−2 << NONO << C2-2C2−2 << He+2He+2
2. NONO << C2-2C2−2 << O-2O−2 << He+2He+2
3. C2-2C2−2 << He+2He+2 << NONO << O-2O−2
4. He+2He+2 << O-2O−2 << NONO << C2-2C2−2