ARTICLES

The lightest element on the periodic table is hydrogen. The atomic weight of hydrogen is 1.00794 and the atomic number is 1. Hydrogen is the most abundant element on the periodic table with 75 percent of the mass of the ...

www.reference.com/article/lightest-element-periodic-table-97ed1093b943ca0d

While the invention of the periodic table of elements is commonly attributed to Dmitri Mendeleev, the atomic weight sorting system was first conceptualized in 1862 by Alexandre-Emile Béguyer de Chancourtois. Despite rele...

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The periodic table of elements is a chemistry reference that lists elements by increasing atomic number, which typically correlates to their atomic masses. The atomic number increases from left to right as well as from t...

www.reference.com/article/periodic-table-elements-5ab96af5675149e8

SIMILAR ARTICLES

In a color-coded periodic table of the elements, the box for each element is colored. This color represents the classes of elements, which include metals, metalloids and non-metals. In general, the color blue is used for...

www.reference.com/science/color-coded-periodic-table-d86d4a56165a0abb

Lithium, with the symbol Li and an atomic number of 3, is a pure element which, under standard conditions, is the lightest known metal. It has a density of 0.534 gram per cubic meter, making it the least dense solid elem...

www.reference.com/article/lightest-metal-3ad8838c22e425f2

The lightest element is hydrogen, H2, which is also the most common. Hydrogen is very reactive and forms water when it interacts with oxygen.

www.reference.com/article/lightest-element-e379e589d137adae

"Rn" stands for radon in the periodic table. Radon's atomic number is 86, and its atomic weight is 222. Radon was originally called niton when it was discovered in 1900.

www.reference.com/article/rn-stand-periodic-table-fd916b113250f5e7