1.

Which of the following is the correct code for statements below ?(i) Due to small size oxygen has less negative electron gain enthalpy than sulphur.(ii) Oxygen shows only –2 oxidation state whereas S, Se and Te shows +4 O.S in their compounds with oxygen and +6 with fluorine(iii) All hydrides of oxygen family possess reducing property which increases from H2S to H2Te.(iv) Among hexahalides of group 16 hexafluorides are the onlys table halides.(v) Dimeric monohalides of group 16 undergo disproportionation.(a) TFFTT (b) FTTFF(c) FTFTF (d) TFTFT

Answer»

(a) Oxygen shows oxidation state of +2 in OF2 . H2O which is a hydride of oxygen element of group 16 is neutral in nature



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