Show that F forms ionic bond with Na but it forms covalent bond with H
Answers
Answer:
Yes it is true that Na and F forms ionic bond and H forms covalent bonding
Ionic bonds are formed by transferring electrons while covalent is formed by sharing
The reason for difference in bonding is given below
According to Fajan's rule, the nature of bonding can be determined, which can be covalent or ionic.
The three parameters for judgement are - intensity of positive charge, cationic and anionic size.
Since the positive charge and anionic size remained same among given elements namely Hydrogen, Fluorine and Sodium, only size of cation differs.
The large cation according to rule forms ionic bond, and hence sodium fluoride is ionic.
The small cation according to rule will form covalent bond, and hence hydrogen ending smaller forms covalent bond.