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  • Periodic Classification of Elements
  • How many elements were known when Mendeleev classified th...
Multiple choice

How many elements were known when Mendeleev classified the elements ?

  1. 61

  2. 62

  3. 63

  4. 64

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

63 elements were known when mendeleev classified the elements

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