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 ...

More than 75 years after its initial discovery, scientists have created an organometallic molecule containing the ...

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

Developing the periodic table The periodic table was developed by grouping elements with similar properties. This, together with a later arrangement by atomic weight, led to a repeating pattern of ...

The atomic number of tellurium is 52 and the atomic number of iodine is 53, so these elements are in the correct order in the modern periodic table.

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards ... The higher an element's electronegativity, the ...