Return to the Main CHEMystery Page.
Return to the Periodic Table of the Elements

Element 104 - Unnilquadium* (Unq)*

Originally named after Lord Ernest Rutherford; was produced in 1969 at Lawrence Radiation Laboratory by bombardment of californium with carbon nuclei. Soviet scientists had earlier announced the discovery of element 104, but this was not accepted internationally.

Properties
Atomic Number:	104
Atomic Weight:	(261)
Electron Configuration (at ground state):	1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰5f¹⁴6s²6p⁶6d²7s²
Mass Number (Bold naturally occurring) -- Half-Life -- Disintigration Type:	261 -- 65 seconds -- alpha particle emission

Element 104 - Unnilquadium (Unq)

Properties

Element 104 - Unnilquadium* (Unq)*