The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev. Mendeleev intended the table to ...

Since element 99 -- einsteinium -- was discovered in 1952 from the debris of the first hydrogen bomb, scientists have performed very few experiments with it because it is so hard to create and is ...

The periodic table of the elements, principally created by the Russian chemist, Dmitry Mendeleev (1834-1907), celebrated its 150th anniversary last year. It would be hard to overstate its importance ...

The periodic table merges scientific inquiry, international politics, hero worship, desires for structure and desires for credit. Formally, the modern periodic table is a systematic arrangement of the ...

The periodic table is part of the bedrock of chemistry education. Students use it to look up values like an element’s atomic mass, and it serves as a visual reference for the trends in physical ...

Heavy elements: Researchers created molecules containing actinium (Ac) and Nobelium (No), atoms found on opposite sides of the actinide series of chemical elements. They expect chemical properties to ...

The United Nations announced 2019 as the International Year of the Periodic Table of the Chemical Elements to highlight its first publication in 1869. The periodic table as we know it today was first ...

This lesson utilizes an adaptation of the board game Periodic: A Game of the Elements to help students better understand both general periodic trends and the law of conservation of energy. This ...

The 2019 International Year of the Periodic Table may be over, but we can continue celebrating the many ways that the periodic table can serve as an organizational tool, including as a guide for our ...