Multiple choice

Which of the following is a drawback in Mendeleev’s periodic table?

  1. Gaps were left in between the periodic table

  2. Properties of elements were considered periodic function of their atomic masses

  3. Position of hydrogen in the periodic table

  4. Consideration of only 63 elements
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hydrogen was not given fixed position in periodic table and worked in group I A and VII A. During Mendeleev’s time, only 63 elements were known.

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