Joel Achenbach writes about science and politics for The Washington Post's National desk. He has been a staff writer for The Post since 1990. He started the newsroom’s first online column, Rough ...

Virtual-PeriodicTable is an open-source project designed to provide a customizable and interactive periodic table. Unlike many existing solutions, this project emphasizes simplicity and accessibility, ...

When you enter the laboratory, you will find a table on the wall in the shape of the periodic table. However, instead of the element, there are numbers in certain squares of the table. While it is ...

The periodic table of elements—also known as Mendeleev’s table—was developed in 1869 by Russian chemist Dmitri Mendeleev. It organizes all known chemical elements by their atomic number ...

Emmanuel Lidden, a 24-year-old self-proclaimed "science nerd," aimed to collect every element from the periodic table. However, his pursuit took a drastic turn when he ordered a restricted ...

Design: Features the periodic table symbol for copper (Cu), atomic number (29), atomic mass (63.546), melting point (1085°C), and density (8.96 g/cm³). Made in: USA. High Purity: Made from 99.9% pure ...

Since the turn of the century, six new chemical elements have been discovered and subsequently added to the periodic table of elements, the very icon of chemistry. These new elements have high ...