Which of the following is not hygroscopic?

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(A) Hygroscopic substances are those that absorb moisture from the atmosphere.$MgCl_2$,$CaCl_2$,and $LiCl$ are hygroscopic in nature due to their high

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$NaCl$

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(A) Hygroscopic substances are those that absorb moisture from the atmosphere.$MgCl_2$,$CaCl_2$,and $LiCl$ are hygroscopic in nature due to their high charge density and small ionic size,which allows them to strongly attract water molecules.Pure $NaCl$ is not hygroscopic. It does not absorb water from the atmosphere under normal conditions. The moisture often observed in common table salt is due to the presence of impurities like $MgCl_2$ or $CaCl_2$.

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