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

JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Topic Test - Periodic Table

  • question_answer
    Covalent radius of nitrogen is 70 pm. Hence, covalent radius of boron is about:

    A) 60 pm

    B) 110 pm

    C) 50 pm

    D) 40 pm

    Correct Answer: B

    Solution :

    [b] Radius decreases along a period from left to right thus \[B(Z=5)>N(Z=7)\].


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