The decreasing order of ionic character of the N-H, F-H, C-H, and O-H, is :
| 1. | N-H > F-H > C-H > O-H |
| 2. | F-H > N-H > C-H > O-H |
| 3. | O-H > C-H > F-H > N-H |
| 4. | F-H > O-H > N-H > C-H |
Which of the following factors are favourable for the formation of an ionic bond?
| 1. | Low ionization enthalpy, High negative electron gain enthalpy, High lattice energy. |
| 2. | High ionization enthalpy, High electron gain enthalpy, High lattice energy. |
| 3. | Low ionization enthalpy, Low electron gain enthalpy, Low lattice energy. |
| 4. | High ionization enthalpy, Low electron gain enthalpy, High lattice energy. |
Which of the following pair of elements can form an ionic compound?
| 1. | \(\mathrm{Na}\) and \(\mathrm{Ca}\) | 2. | \(\mathrm{K}\) and \(O_2\) |
| 3. | \(O_2\) and \(Cl_2\) | 4. | \(Al\) and \(I_2\) |