1.

Highest oxidation state of manganese in fluorides is +4(MnF_4)but highest oxidation state in oxides is +7(Mn_2O_7) because

Answer»

fluorine is more ELECTRONEGATIVE than oxygen
fluorine does not POSSESS d-orbitals
fluorine stabilises lower oxidation state
In covalent compounds, fluorine can FORM single BOND only while oxygen forms double bond

Solution :In covalent compounds, fluorine can form single bond only while oxygen forms double bond


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