That means selenium has 2, 8, 18 and 6 electrons in its first, second, third and fourth atomic orbital, respectively. When Mendeleev first published the original periodic table in 1869 ...

Want to learn more about this centerpiece of chemistry? Take your pick from this collection of links about elements and the periodic table! Build an element ball, solve periodic puzzles, and check out ...

Test your knowledge and compete with other Live Science readers to see who can come top in our periodic table quiz. The ...

Have we reached the end of the line of discoverable elements? Scientists have been slowly extending the periodic table one element at a time, pushing to higher and higher masses, and have ...

He published his Periodic Table – in all its incomplete beauty ... the most well-known of these being the noble gases (group 18). Here are five facts you might not know about it (despite ...

MIT researchers found that different algorithms can all be grouped into a ‘periodic table’ of AI. The idea for the table was an accident that emerged from identifying similarities between two ...

To expand the periodic table, it might be time to go titanium. A new study lays the groundwork to expand the periodic table with a search for element 120, to be made by slamming electrically ...

ACS Publications journals Editors are joining in the IYPT celebrations with a series of videos exploring their relationship with the table. Is the periodic table hanging in your lab, classroom, or ...