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Question

Na2O2 is an oxide of alkali metal which is diamagnetic.
If true enter 1, else enter 0.

Solution
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Concept:If a substance is having even number of electrons (or) no unpaired electrons in theirr molecular orbital diagram,it is said to be diamagnetic.
Na2O2 consists of 11*2+8*2 equals to 38 electrons which is even number,so diamagnetic
Hence option 1 is correct.

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