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Hi everyone.
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In order to tackle this question, first of all, one should know what are hygroscopic substances.
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Hygroscopic substances.
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You know the substance? substances which are easily absorbing water, absorbing water are called hygroscopic substances.
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Substances egroscopic nature depends on hygroscopic nature depends on first size of iron second polarity polarity third hydration enthalpy hydration enthalpy then next solubility unhydrous lithium salts are hegroscopic because unhedous lithium salts are hygroscopic in nature because first allyplase is smallest iron is the smallest iron is the smallest iron second, it has a high polarizing power for water molecule, polarizes water molecule water molecule aciline, aciline.
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Thirdly, lithium salts have high hydration enthalpy, enthalpy.
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So due to these three reasons, lithium ions attract.
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More water molecules, lithium attracts more water molecule, molecule, and gets attached as a water of crystallization to it and gets attached as a water of crystallization to it.
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You know, for example, lithium chloride dihydrate...