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"
atomic number 24
— Navneord
– Engelsk
～ a hard brittle multivalent metallic element; resistant to corrosion and tarnishing
atomic number 84
— Navneord
– Engelsk
～ 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
atomic number 44
— Navneord
– Engelsk
～ a rare polyvalent metallic element of the platinum group; it is found associated with platinum
atomic number 28
— Navneord
– Engelsk
～ a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite
atomic number 71
— Navneord
– Engelsk
～ a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
atomic number 39
— Navneord
– Engelsk
～ a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys
atomic number 79
— Navneord
– Engelsk
～ 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
atomic number 26
— Navneord
– Engelsk
～ a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood
atomic number 99
— Navneord
– Engelsk
～ a radioactive transuranic element produced by bombarding plutonium with neutrons