Multiple choice

Who did the first classification of elements and arranged three elements in a group?

  1. Mendeleev

  2. Newlands

  3. Dobereiner

  4. Henry Moseley

  5. None of these

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

Yes, it is the correct answer. He arranged three elements in one group which is known as ‘triad’. Such arrangements of elements are known as Dobereiner’s triads.