A team of scientists working at Lawrence Berkeley National Laboratory (Berkeley Lab) has discovered a new form of the human-made element mendelevium. The newly created isotope, mendelevium-244, is the 17th and lightest form of mendelevium, which is element 101 on the periodic table. Mendelevium was first created by Berkeley Lab scientists in 1955, and is among a list of 16 other elements that Berkeley Lab scientists discovered or helped to discover. An isotope is a form of element with more or fewer neutrons (uncharged particles) in its atomic nucleus than other forms of element.
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