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rutherfordium
(redirected from element 104)

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ruth·er·for·di·um (rr-frd-m)
n. Symbol Rf
A radioactive synthetic element whose longest-lived isotopes haved mass numbers of 253, 255, 257, and 259 with half-lives of 1.8, 1.6, 4.7, and 3.4 seconds. Atomic number 104.
rutherfordium
a chemical element, atomic number 104, atomic weight 261, symbol Rf. See Table 6.
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In addition, the panel selected the name dubnium for element 104, joliotium for 105, and rutherfordium for 106.
Elemental upset by Science News
In this scheme, element 104 is unnilquadium and element 105 is unnilpentium.
Discovering transuranic elements at Dubna by Thomsen, Dietrick E. / Science News
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