Atomic Number: 102

Protons: 102

Electrons: 102

Neutrons: 157

Average Atomic Mass: 259

Isotopes: Ten isotopes of nobelium are recognized. Nobelium-255 has a half-life of 3 minutes. Nobelium-254 has a half-life of 55-s, Nobelium-252 has a half-life of 2.3-s, and Nobelium-257 has a half-life of 23-s.

Discovery: In 1957, a group of scientists working at the Nobel Institute of Physics in Stockhlom, Sweden, announced the discovery of a new element.

Name: Named for Alfred Nobel, discoverer of dynamite and founder of the Nobel Prize.

Uses: No uses

Interesting Facts: Nobelium was the 10th transuranium element to be discovered. It was first produced and detected in Apr., 1958, by Albert Ghiorso, Torbjørn Sikkeland, John R. Walton, and Glenn T. Seaborg at the Univ. of California at Berkeley; they used a heavy-ion linear accelerator to bombard a mixture of curium-244 and curium-246 with carbon-12 ions, producing nobelium-254 ( 55 sec).


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