WBCS.LIVE practice question

Name the German chemist who grouped elements into triads in 1817.

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. John Newlands
  2. Henry Moseley
  3. Johann Wolfgang Dobereiner
  4. Dmitri Ivanovich Mendeleev

Correct answer and explanation

Correct answer: Johann Wolfgang Dobereiner