Multiple choice

Who among the following scientists helped to develop the Periodic law?

  1. Niels Bohr

  2. DI Mendeleev

  3. Christian Huygens

  4. Isaac Newton

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

Dmitri Ivanovich Mendeleev developed the Periodic Law in 1869, arranging elements by atomic weight and predicting undiscovered elements. Niels Bohr developed atomic structure theory, Huygens studied wave optics, and Newton formulated classical mechanics.