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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

Observe the following statement I. The physical and chemical properties of elements are periodic functions of their electronic configuration. II. Electronegativity of fluorine is less than the electronegativity of chlorine. III. Electropositive nature decreases from top to bottom in a group. The correct answer is [EAMCET 2006]

Answer: (B)

Solution

Statement I correctly restates the Modern Periodic Law (properties recur periodically with electronic configuration, which in turn is set by atomic number). Statement II is false because

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Question ID VK-133204