Question

1pt What did Mendeleev do differently with his periodic table?

O A. He left open spaces.
OB. He organized in rows.
OC. He organized in columns.
O D. He organized by atomic mass.

Answer 1

Dmitri Mendeleev left open spaces, organized elements in rows and columns, and arranged the elements by atomic mass.

Step-by-step explanation:

Dmitri Mendeleev did several things differently with his periodic table. Firstly, he left open spaces, which represented elements that were yet to be discovered. This was based on his belief that there were undiscovered elements that would fit into those gaps. Secondly, he organized the elements in rows called periods and columns called groups or families. This helped to highlight similarities and patterns in chemical properties. Lastly, Mendeleev organized the elements by atomic mass, which allowed for the arrangement of elements in a way that showed periodicity.

Learn more about Dmitri Mendeleev and his contributions to the periodic table