How The Elements Are Laid Out In The Periodic Table

The video explains the evolution of the periodic table from Mendeleev's arrangement by atomic mass to the modern arrangement by atomic number. It highlights the advantages of the modern table, such as resolving placement issues like iodine and tellurium. The video also discusses the creation of new, highly radioactive elements and how their properties can be predicted based on their position in the table. Finally, it describes the basic division of the periodic table into metals and nonmetals.

What is the significance of the modern periodic table's arrangement by atomic number?

What are the characteristics of the new elements being created by scientists?