%atomic number 7%

ลองค้นหาคำในรูปแบบอื่น: atomic number 7, -atomic number 7-

WordNet (3.0) WordNet (3.0)

gold

(n) a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia, Syn. Au, atomic number 79

hafnium

(n) a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons, Syn. atomic number 72, Hf

iridium

(n) a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium, Syn. Ir, atomic number 77

lutetium

(n) a trivalent metallic element of the rare earth group; usually occurs in association with yttrium, Syn. lutecium, Lu, atomic number 71

nitrogen

(n) a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues, Syn. N, atomic number 7

osmium

(n) a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known, Syn. atomic number 76, Os

platinum

(n) a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits, Syn. atomic number 78, Pt

rhenium

(n) a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum, Syn. atomic number 75, Re

tantalum

(n) a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite, Syn. Ta, atomic number 73

tungsten

(n) a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite, Syn. W, wolfram, atomic number 74

ytterbium

(n) a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime, Syn. Yb, atomic number 70

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