Correct order of basic strength of the following oxides
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a
SO3>MnO>NO>K2O
b
MnO>SO3>K2O>NO
c
K2O>MnO>NO>SO3
d
NO>SO3>MnO>K2O
answer is C.
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Detailed Solution
Basic strength ∝1 Oxidation state ∝1 E. N. ∴K2O+1>MnO+2>NO+2>SO3+2+6 Here K2O is more basic than MnO; MnO is more basic than NO because E.N. of N is more than Mn and less the oxidation state more will be basic character.