Astronomy

I understand that new stars form out of mostly hydrogen with smaller amounts of heavier elements. If helium, carbon, oxygen, and other heavier elements were abundant enough to ...

Hydrogen is by far the most abundant element in the universe. It constitutes roughly 90 percent of atoms in the Sun and in most stars. Helium ranks second, with nearly 9 percent. This leaves only 1 ...
BBC

Elements, compounds and mixtures

Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...
Forbes

This Is Why Three Of The Lightest Elements Are So Cosmically Rare

If you were to take every element in the periodic table and order them by how abundant they are in the Universe, you'd find something a little bit surprising. The most common element is hydrogen, ...
RealClearScience

Periodic Table: Scientists Propose New Way of Ordering the Elements

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 ...
New Scientist

The periodic table

The periodic table captures a subtle pattern that runs through the chemical elements, the fundamental building blocks of everything around us: from the aluminium in bike frames to the xenon gas in ...