Element-111



noun, Chemistry, Physics.
1.
.
[rent-gen-ee-uh m, -jen-, ruhnt-] /rɛntˈgɛn i əm, -ˈdʒɛn-, rʌnt-/
noun, Chemistry, Physics.
1.
a superheavy, synthetic radioactive element with a very short half-life. Symbol: Rg; atomic number: 111.
[uh-nuh-nuhn-ee-uh m] /ə nəˈnʌn i əm/
noun, Chemistry, Physics.
1.
former name of . Symbol: Uuu.
element 111
Symbol Uuu
An artificially produced radioactive element whose isotope has a mass number of 272 and a half-life of 1.5 milliseconds. Atomic number 111. Also called unununium. See Periodic Table.
unununium
(ə-nə-nŭn’ē-əm)
See element 111.

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