There are currently 118 known elements listed on the periodic table; from hydrogen, which has a single proton in its nucleus, ...

A zig-zag line divides them. In most periodic tables hydrogen (H) is shown separately but is still classified as a non-metal. Hydrogen is placed on its own as it is quite a unique element.

Space is home to a great many oddities, and even chemistry gets strange out there. In fact, there are even some molecules ...

Forget 10 Downing Street or 1600 Pennsylvania Avenue, the most prestigious address in the universe is number one in the periodic table, hydrogen. In science, simplicity and beauty are often equated - ...

Accompanying Lesson Plan: Lesson 3.2: Finding Volume—The Water Displacement Method The chart shows that atomic size and mass for the first 20 elements in the periodic table ... is made up only of ...

National Periodic Table Day, observed annually on February 7, honors one of the most significant achievements in scientific ...

This hydrogen will power the customer's fleet of ... our quarterly reports on Form 10-Q and other periodic reports filed from time to time with the Securities and Exchange Commission.