Question

Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing element?

Answer 1

Answer:

Dmitri Mendeleev

Explanation:

Dmitri Mendeleev a Russian Chemist arranged elements on the periodic table according to their atomic mass. He used this arrangement to predict some of the properties of the missing element.

• Dmitri Mendeleev around 1869 described the periodic table.
• The table was based on the periodic law which states that "chemical properties of elements are a periodic function of their atomic weights".
• In the Mendeleev table, elements are arranged by atomic weights with recurring properties in a periodic manner.