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NCl3 is an endothermic compound while NF...

NCl3 is an endothermic compound while NF3 is an exothermic compound. explain

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In `NF_(3)` difference in the size of N and Fis small as compare to N and Cl. Hence N-F bond is quite strong in `NF_(3)`. As a result `NF_(3)` is an exothermic compound.
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