__1803: __English chemist-physicist John Dalton starts using symbols to represent the atoms of different elements. Dalton, considered the father of modern atomic theory, made a logbook entry that day ...

One of the first things we learn in chemistry are atomic symbols to represent different elements. While what we see today has undergone transformation through the centuries, the credit for the ...

This week, we meet the element lawrencium, which has the atomic symbol, Lr, and the chemical number, 103. It was named in honour of nuclear physicist Ernest O. Lawrence, who worked at the University ...

To celebrate National Chemistry Week, which runs from Oct. 20-26, we asked a bunch of scientists, with help from the American Chemical Society, what their favorite periodic element is, and why. A ...

For the last fifty or so years, the periodic table has been incomplete. Elements after uranium on the periodic table have been synthesized for the past few decades, but there were always a few missing ...

The periodic table has to be one of the most recognizable symbols of science, rivaled by the double helix and few others. Almost everyone should recognize its shape, however dimly, from a high school ...

It happens all over the periodic table. The chemical symbol for lead is Pb. For mercury, Hg. For antimony, Sb. My chemistry teacher in high school cracked up every time she referred to the symbol for ...

Standard atomic weights, those numbers emblazoned under the elements on the periodic table, were once thought of as unchanging constants of nature. But researchers have tweaked the atomic weights of ...