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  5. Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति

Railways General Science & Technology Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Sample Paper Classification of Elements and Periodicity in Properties Sample Test Paper-15

  • question_answer
    The cause of periodicity of properties is

    A)  Increasing atomic radius

    B)  Increasing atomic weights

    C)  Number of electrons in the valency orbit

    D)  The recurrence of similar outer electronic configuration

    Correct Answer:


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