(i) Give correct order of boiling point of hydride of group 17. (ii) – InterviewSolution

1.	(i) Give correct order of boiling point of hydride of group 17. (ii) Fluorine exhibits only -1 oxidation state whereas other halogens show +1, +3, +5 and +7 oxidation state also Explain.
Answer» Solution :(i) `HCl LT HBR lt HI lt HF` (ii) Fluorine being the most electronegativeelementcannot have positive OXIDATION STATE. Other halogens have d-orbitals,therefore can expand their octet.

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