1.

Assertion : Lithium carbonate is not so stable to heat. Reason : Lithium being very small in size polarizes large CO_(2)^(3)ion leadingto thefomationof morestableLi_(2) )Oand CO_(2)

Answer»

Assertionis correct, reason is correct, reason is a correct explanation for assertion.
Assertionis correct, reason is correct, REASONIS not a correct explanation for assertion
Assertionis correct, reasonis incorrect
Assertion is incorrect, reasonis correct.

Solution : BothAssertionand Reasonare true butReasonis notthe correctexplanation ofstatement- 1.` [Fe ( CN) _6 ]^ (3 -) `isweaklyparamagneticasitunpairedelectronswhile` [Fe (CN) _6]^ (2 -) `hasnounpairedelectron.
`therefore`It is diamagnetic.


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