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bohemium

(Encyclopedia)bohemium bōhēˈmēəm [key], former name of the chemical element rhenium. ...

kurchatovium

(Encyclopedia)kurchatovium kûrˌchətōˈvēəm [key], symbol Ku, former suggested name for element 104, now called rutherfordium. ...

joliotium

(Encyclopedia)joliotium zhōlyōˈshēəm [key], symbol Jl, former suggested name for element 105, now called dubnium. ...

columbium

(Encyclopedia)columbium kəlŭmˈbēəm [key], symbol Cb, former name of the chemical element niobium. ...

francium

(Encyclopedia)francium frănˈsēəm [key] [from France], radioactive chemical element; symbol Fr; at. no. 87; mass no. of most stable isotope 223; m.p. about 27℃ (estimated); b.p. 677℃ (estimated); sp. gr. unk...

peroxide

(Encyclopedia)peroxide pərŏkˈsīd [key], chemical compound containing two oxygen atoms, each of which is bonded to the other and to a radical or some element other than oxygen; e.g., in hydrogen peroxide, H2O2, ...

Breviary of Alaric

(Encyclopedia)Breviary of Alaric ăˈlərĭk [key], Visigothic code of Roman law issued (506) by King Alaric II for his Roman subjects in Spain and S Gaul. It is also known as the Lex Romana Visigothorum. Based lar...

rhenium

(Encyclopedia)rhenium rēˈnēəm [key], metallic chemical element; symbol Re; at. no. 75; at. wt. 186.207; m.p. about 3,180℃; b.p. about 5,625℃; sp. gr. 21.02 at 20℃; valence −1, +2, +3, +4, +5, +6, or +7....

vanadium

(Encyclopedia)vanadium vənāˈdēəm [key], metallic chemical element; symbol V; at. no. 23; at. wt. 50.9415; m.p. about 1,890℃; b.p. 3,380℃; sp. gr. about 6 at 20℃; valence +2, +3, +4, or +5. Vanadium is a ...

Río

(Encyclopedia)Río and Rio, respectively Spanish and Portuguese terms for river. For those not listed here, see under the second element of the name. Thus, for Río Lerma, see Lerma. ...