Question

why SnCl4 are covalent​

Answer 1

Answer:

Explanation:

- In SnCl2, Sn2+ ion is quite big and thus forms ionic bond with Cl-.

- SnCl2 is highly soluble in water and forms ions in aqueous soln.

- In SnCl4, Sn4+ has 1 subshell less than that of Sn2+, hence it's smaller ion. Thus it forms covalent bond.

- As SnCl4 is insoluble in water, it won't dissociate.

HOPE IT HELPS....

Answer 2

comparing SnCl2 and SnCl4, SnCl$ is ore covalent, because Sn2+ ion in SnCl2 is larger than Sn4+ ion in SnCl4. The size of Sn4+ is small, because of high effective nuclear charge (ENC) since there are more no of protons than electrons in Sn4+ than in Sn2+.......... Also, Fajan's rule sates that:

Ionic                     Covalent

1. Low positive                   1. High positive  

  charge                                charge

2. Large cation            2. Small cation

3. Small anion            3. Large anion

here, Sn4+ has high chrage, and hence, it is more covalent than Sn2+

hope it helps

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