Mrs Roberts: So, the chemical symbol is Al. See if you can see it ... Mrs Roberts: Well, the modern periodic table shows us all of the elements arranged in rows, which are called periods.

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

The Periodic Table is a well-organized chart that contains all 118 known elements in the universe. These elements are the ...

This year marks the 150th anniversary of the publication of Mendeleev’s Periodic Table of Chemical Elements in 1869. In celebration, the United Nations Educational, Scientific, and Cultural ...

But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...

and read off the time using the atomic number of the elements. So, if it’s 13:03:23, that would light up aluminum in blue, lithium in green, and vanadium in red. The periodic table was designed ...

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the challenge of ...

A 24-year-old Australian man could go to jail for ten years as he prepares to plead guilty for importing plutonium from a ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards itself within a chemical bond. This vital theoretical ...