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प्रश्न
What is meant by periodicity of elements?
उत्तर
The recurrence of similar properties of elements after certain regular intervals when they are arranged in the order of increasing atomic numbers is called periodicity.
Concept Insight: Periodicity in properties is due to the repetition of similar outer electronic configuration of elements at certain regular intervals.
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संबंधित प्रश्न
The atomic masses of three elements A, B and C having similar chemical properties are 7, 23 and 39, respectively.
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Name the element of lower nuclear charge out of Be and Mg.
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Fill in the blank
Most electropositive elements belong to ______ group.
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its valency
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