The Periodic Table

Question 1

Who arranged the periodic table and want did he do?

Answer 1

Dimitri Mendeleev arranged the table and he grouped them by properties and uses, he has some gaps as he left them for other elements and he wanted to keep some elements together .

Question 2

What does the periodic table today look like and what does it show ?

Answer 2

Shows columns and groups of elements according to properties and number of electrons in the shells