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InterviewSolution
| 1. |
Lithium fluroide (LiF) is mainly ionic but lithium iodide (LiI) is covalent in nature. Assign reason. |
| Answer» `I^(-)` ion has a bigger size than the `F^(-)` ion. It can be more readily polarised by `Li^(+)` ion than by `F^(-)` ion. As a result, `Li^(+) " and " I^(-)` ions come quite close and neutralise their charge to a large extent resulting in covalent compound. On the other hand, `Li^(+) " and " F^(-)` ions are not in a position to neutralise their charge and LiF is mainly ionic. | |