Question

why HNO3 is different from HNO2​

Answer 1

This is significant because the electrons can delocalize over a greater volume that allows for more stabilization of the negative charge. Since NO3- can hold the negative charge better than NO2-, NO3- is a more stable conjugate base. By the same argument as above, HNO3 would be stronger.

Answer 2

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HERE IS YOUR ANSWER:--------

AS HNO3 CONTAINS 3 ATOMS OF OXYGEN AND HNO2 CONTAINS ONLY TWO ATOMS OF OXYGEN SO THEY ARE DIFFERENT.

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