Element, artificial

scroll

Element not or no longer occurring on earth, but artificially generated by nuclear reaction. The artificial elements include the elements technetium (atomic number Z = 43), promethium (Z = 61) and the tran-suraniums (Z > 92). A total of 117 elements are therefore known today. In the 70’s, it could be verified that very low traces of plutonium occur in nature resulting from natural nuclear fissions (about 1 pluto-nium atom per 10¹² uranium atoms).

Element name	Symbol	Atomic number
Technetium	Tc	43
Promethium	Pm	61
Neptunium	Np	93
Plutonium	Pu	94
Americium	Am	95
Curium	Cm	96
Berkelium	Bk	97
Californium	Cf	98
Einsteinium	Es	99
Fermium	Fm	100
Mendelevium	Md	101
Nobelium	No	102
Lawrencium	Lw	103
Rutherfordium	Rf	104
Dubnium	Db	105
Seaborgium	Sb	106
Bohrium	Bh	107
Hassium	Hs	108
Meitnerium	Mt	109
Darmstadtium	Ds	110
Roentgenium	Rg	111
Still without name		112
Still without name		113
Still without name		114
Still without name		115
Still without name		116
Still without name		118

List of artificial elements

back