Which of the following is a polar molecule?
1. | SF4 | 2. | SiF4 |
3. | XeF4 | 4. | BF3 |
A paramagnetic molecule among the following is:
1. | O2– | 2. | CN– |
3. | NO+ | 4. | CO |
Isostructural pair among the following is:
1. BCl3 and BrCl3
2. NH3 and NO-3
3. NF3 and BF3
4. BF-4 and NH+4
The bond order of 1.5 is shown by:
1. | O+2 | 2. | O−2 |
3. | O2−2 | 4. | O2 |
Identify the wrong statement among the following.
1. | Amongst isoelectronic species, the smaller the positive charge on the cation, the smaller is the ionic radius |
2. | Amongst isoelectronic species, the greater the negative charge on the anion, the larger is ionic radius |
3. | Atomic radius of the elements increases as one moves down the first group of the periodic table |
4. | Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table |
Which of the following species contains three bond pairs and one lone pair around the central atom?
1. H2O
2. BF3
3. NH−2
4. PCl3
The pair of species with the same bond order is:
1. O2-2, B2
2. O+2,NO+
3. NO, CO
4. N2,O2
Which of the two ions from the list given below have the geometry that is explained by the same hybridisation of orbitals, NO-2,NO-3,NH-2,NH-4,SCN- ?
1. NH-4 and NO-3
2. SCN- and NH-2
3. NO-2 and NH-2
4. NO-2 and NO-3