Lawrencium

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7p1
General Properties
Atomic number Predicted atomic mass Half-life of longest living isotope Electron Configuration First developed
103 262amu Around 11 hours [Rn] 5f14 7s2 1958
General Properties
Atomic number 103
Atomic mass 262amu
Half-life of longest living isotope Around 11 hours
Electron Configuration [Rn] 5f14 7s2
First discovered 1958

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Description and uses

Lawrencium is the 103rd element of the periodic table. It was discovered between 1958 and 1965 by several groups of researchers. Its longest living isotope is 266Lr, with a half-life of around 11 hours.

T&C