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Question

The crown-guest complex is called an inclusion compound. The crown ether allows the inorganic salt to dissolve in non-polar solvents. $$\displaystyle KMnO_{4}$$ forms a complex with crown ether. In this complex, the host is ............. and the guest is ................ .


A
K and crown ether
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B
MnO4 crown ether and K
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C
MnO4 and crown ether
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D
Crown ether and MnO4
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Solution

The correct option is C $$\displaystyle MnO{_{4}}^{\circleddash }$$ crown ether and $$\displaystyle K^{\bigoplus }$$
The characteristic chemistry of crown ethers involves complexation of the ether oxygens with various ionic species. and this is termed "host-guest" chemistry, with the {ether as host and the ionic species as a guest}.

Chemistry
NCERT
Standard XII

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