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

The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri ...

This is the second part of a three-part series written by Carolyn Krause. Many of the elements were synthesized using an Oak ...

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

Meyer’s table was comprised of 44 elements arranged by valency; Odling’s version arranged 57 elements by their atomic weight. Odling’s table was remarkably similar to the one that Mendeleev had ...

The way we arrange them is in the order of increasing atomic number ... Now, the table is called the periodic table because the elements with similar properties occur at regular intervals.

A chemical element is one of those squares on the periodic table that adorns many a classroom ... It is the number of protons, otherwise known as the atomic number, that determines which element ...

It is the principle strengthening element in carbon steels and low-alloy steels. Atomic number 6, atomic weight 12.01115. Manganese (Mn): Manganese is a brittle, metallic element that exists in ...

The breakthrough disrupts long-held theories about the chemistry of the elements that follow uranium in the periodic table. A research team led by ... common for early actinide elements like uranium ...

The pioneering nuclear chemist Glenn Seaborg discovered berkelium at Berkeley Lab in 1949. It was one of many achievements ...