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The species formed on fluorination of phosphorus pentachloride in a polar organic solvent are :

1. [PF 4 ] + [PF 6 ] − and [PCl 4 ] + [PF 6 ] −
2. [PCl 4 ] + [PCl 4 F 2 ] − and [PCl 4 ] + [PF 6 ] −
3. PF 3 and PCl 3
4. PF 5 and PCl 3

Correct answer: [PCl 4 ] + [PCl 4 F 2 ] − and [PCl 4 ] + [PF 6 ] −

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