Multiple choice

Who created the periodic table of the elements? 

  1. Michael Lomonosov

  2. Dmitriy Medeleyev

  3. Konstantin Tsiolkovsky

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

Dmitri Mendeleev created the periodic table in 1869, arranging elements by atomic weight and predicting elements that would be discovered later. His periodic law organized elements by recurring chemical properties, founding modern chemistry.