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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 Extended or long form of periodic table

  • question_answer
    The total number of rare-earth elements is [CPMT 1993]

    A) 8

    B) 32

    C) 14

    D) 10

    Correct Answer: C

    Solution :

      Lanthanide?s are called rare earth metals.


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