Nobelium is the chemical element with atomic number 102 named after Alfred Nobel.
Nobelium is a synthetic radioactive element in the actinide series. It was first reported in 1957 by a team at the Nobel Institute in Stockholm, but the discovery claim was later disputed and the element was ultimately produced and identified more convincingly by researchers at the Joint Institute for Nuclear Research in Dubna.
The element’s symbol is No. Its most stable known isotope, nobelium-259, has a half-life of about 58 minutes, so nobelium does not occur naturally in useful quantities. Scientists create it by bombarding lighter atomic nuclei in particle accelerators.
Nobelium honors Alfred Nobel, the Swedish chemist, engineer, inventor, and founder of the Nobel Prizes. Lawrencium is element 103, fermium is element 100, and mendelevium is element 101, so those names belong to different elements.