Definition that contains elem
- i a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)
- in a rare soft silvery metallic element; occurs in small quantities in sphalerite
- he a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)
- no a radioactive transuranic element synthesized by bombarding curium with carbon ions; 7 isotopes are known
- be a light strong brittle grey toxic bivalent metallic element
- at a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
- as a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar
- am a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
- first the first element in a countable series
- o 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