JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank General Characteristics

  • question_answer
    What is the name of element with atomic number 105 [CPMT 2004]

    A) Kurchatovium

    B) Dubnium

    C) Nobelium

    D) Holmium

    Correct Answer: B

    Solution :

    The element with atomic no. 105 is dubnium. In IUPAC nomenclature, it is known as un-nil pentin. 


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