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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

Sodium reacts with water less vigorously than potassium because:

Answer: (B)

Solution

Sodium has a higher ionisation enthalpy and is less electropositive than potassium (which is larger and more easily loses its valence electron), making sodium's reaction with water less vigorous. Atomic weight alone (A) is not the determining factor for

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Question ID VK-137786