JEE Main & Advanced Chemistry The d-and f-Block Elements Question Bank Critical Thinking

  • question_answer Out of all the known elements, the percentage of transitional elements is approximately

    A) 30%

    B) 50%

    C) 60%

    D) 75%

    Correct Answer: C

    Solution :

      \[\frac{\text{Transition element }+\text{ Inner transition element}}{\text{Total element}}\times 100\] \[\frac{33+28}{105}\times 100=58.09\approx 60%\]

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