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  WordNet (3.0) 
actinium
(n) a radioactive element of the actinide series; found in uranium ores, Syn. Ac, atomic number 89
astatine
(n) a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium, Syn. At, atomic number 85
bismuth
(n) a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals, Syn. Bi, atomic number 83
francium
(n) a radioactive element of the alkali-metal group discovered as a disintegration product of actinium, Syn. Fr, atomic number 87
lead
(n) a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey, Syn. atomic number 82, Pb, Example:the children were playing with lead soldiers
mercury
(n) a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures, Syn. atomic number 80, quicksilver, hydrargyrum, Hg
oxygen
(n) a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust, Syn. O, atomic number 8
polonium
(n) a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor, Syn. Po, atomic number 84
radium
(n) an intensely radioactive metallic element that occurs in minute amounts in uranium ores, Syn. Ra, atomic number 88
radon
(n) a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health, Syn. Rn, atomic number 86
thallium
(n) a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores, Syn. atomic number 81, Tl
  CC-CEDICT CN-EN Dictionary 
氧
[氧, yǎngㄧㄤˇ] oxygen O, atomic number 8 #4509
铅
[铅 / 鉛, qiānㄑㄧㄢ] lead Pb, metal, atomic number 82 #7204
汞
[汞, gǒngㄍㄨㄥˇ] mercury Hg, transition metal, atomic number 80 #17266
氡
[氡, dōngㄉㄨㄥ] radon Rn, noble gas, atomic number 86 #31040
镭
[镭 / 鐳, léiㄌㄟˊ] radium Ra, alkaline earth, atomic number 88 #34678
钋
[钋 / 釙, pōㄆㄛ] polonium Po 釙|钋, metalloid, atomic number 84, See Also: 釙 #43144
砹
[砹, àiㄞˋ] astatine At, radioactive halogen (or metalloid), atomic number 85 #48371
铊
[铊 / 鉈, tāㄊㄚ] thallium Tl, metal, atomic number 81 #48592
铋
[铋 / 鉍, bìㄅㄧˋ] bismuth Bi, metal, atomic number 83 #55492
钫
[钫 / 鈁, fāngㄈㄤ] francium Fr, unstable alkali metal 鹼性金屬|碱性金属 with atomic number 87, disintegration product of actinium 錒|锕, See Also: 鹼性金屬, 碱性金属, 錒, 锕 #56032
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