The set of correct statements is:
(I) Manganese exhibits +7 oxidation state in its oxide.
(II) Ruthenium and Osmium exhibit +8 oxidation in theirmoxides.
(III) Sc shows +4 oxidation state which is oxidising in nature.
(IV) Cr shows oxidising nature in +6 oxidation state.
Choose the most appropriate answer from the options given below.
Text Solution
Verified by ExpertsB
• II Correct: Ru and Os attain +8 in their oxides 
.
• IV Correct: 
compounds (e.g., 
) are strong oxidising agents.
• I Incorrect in sense: Mn shows +7 mainly in oxoanions (e.g., 
); its commonly listed oxides don't have Mn in +7.
• III Incorrect: Sc is essentially 
is not a stable oxidation state and it does not commonly show oxidising nature.
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