atomic number 29
— Navneord
– Engelsk
～ a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor
atomic number 18
— Navneord
– Engelsk
～ a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
atomic number 2
— Navneord
– Engelsk
～ 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)
atomic number 13
— Navneord
– Engelsk
～ a silvery ductile metallic element found primarily in bauxite
atomic number 19
— Navneord
– Engelsk
～ a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite
atomic number 73
— Navneord
– Engelsk
～ a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
atomic number 43
— Navneord
– Engelsk
～ a crystalline metallic element not found in nature; occurs as one of the fission products of uranium
atomic number 91
— Navneord
– Engelsk
～ a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
atomic number 9
— Navneord
– Engelsk
～ a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite
atomic number 36
— Navneord
– Engelsk
～ a colorless element that is one of the six inert gasses; occurs in trace amounts in air
atomic number 17
— Navneord
– Engelsk
～ a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water)
atomic number 15
— Navneord
– Engelsk
～ a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms
atomic number 80
— Navneord
– Engelsk
～ a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures
atomic number 113
— Navneord
– Engelsk
～ a radioactive transuranic element
atomic number 60
— Navneord
– Engelsk
～ a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium
atomic number 46
— Navneord
– Engelsk
～ a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry
atomic number 108
— Navneord
– Engelsk
～ a radioactive transuranic element
atomic number 92
— Navneord
– Engelsk
～ a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
atomic number 3
— Navneord
– Engelsk
～ a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals
atomic number 82
— Navneord
– Engelsk
～ a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey; "the children were playing with lead soldiers"