Can you name everything from Ac to Zr? Test your knowledge of the periodic table and see if you can top the leaderboard ...

Students will be able to interpret the information given in the periodic table to describe the arrangement of electrons on the energy levels around an atom.

The table starts with the simplest atom, hydrogen, and then organizes the rest of the elements by atomic number, which is the number of protons each contains.

Another weekend has arrived, and that means new hints are popping up in Cookie Jam. If you’re stuck on “Au on the periodic ...

Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications.

Key Concepts The periodic table is a chart containing information about the atoms that make up all matter. An element is a substance made up of only one type of atom. The atomic number of an atom is ...

Travis Nicholson and colleagues at the National University of Singapore got around this problem by doing laser cooling on a metastable state of indium-115 atoms. Their approach could open new areas of ...

Physicists develop a 'nuclear periodic table'. While the traditional table is based on the behavior of electrons in an atom, this new table is based on the protons in the nucleus. Protons have ...

Humans Up and atom: The fights to put people into the periodic table Element 118 has been named oganesson in honour of nuclear physicist Yuri Oganessian.

My InsiderA periodic table of chemical elements showing where every atom in the solar system comes from. Jennifer A. Johnson/The Ohio State University; NASA; ESA Johnson said the idea for plotting ...

First established in 1869, the periodic table quickly took the scientific world by storm as a means of properly organizing elements. Beyond being a helpful learning tool, the periodic table ...