transition metals [1]![click to hear](/images/speaker.jpg)
Usually less reactant than alkali metals and alkaline earth metals but very good electric and thermal conductors. Many of these metals form vital alloys.
hassium ![click to hear](/images/speaker.jpg)
Artificial radioactive element that was first produced in laboratories in 1984; it is based on lead and iron.
bohrium ![click to hear](/images/speaker.jpg)
Artificial radioactive element that was first produced in laboratories in 1976; it is based on bismuth and chromium.
seaborgium ![click to hear](/images/speaker.jpg)
Artificial radioactive element that was first produced in laboratories in 1974; it is based on californium and oxygen.
dubnium ![click to hear](/images/speaker.jpg)
Artificial radioactive element that was first produced in laboratories in the 1960s.
rutherfordium ![click to hear](/images/speaker.jpg)
Artificial radioactive element that was first produced in laboratories in the 1960s; it has applications only in scientific research.
rhenium ![click to hear](/images/speaker.jpg)
Rare metal that is resistant to wear and corrosion; it is used especially in pen tips and incandescent filaments for ovens.
tungsten ![click to hear](/images/speaker.jpg)
Metal that is resistant to very high heat; it is used in filaments for incandescent lamps and cutting tools.
tantalum ![click to hear](/images/speaker.jpg)
Somewhat rare metal that is highly resistant to heat; it is used especially in nuclear reactors, missiles and capacitors.
osmium ![click to hear](/images/speaker.jpg)
Rare metal often alloyed with iridium and platinum; it is used in pen tips, bearings, compass needles and jewelry.
hafnium ![click to hear](/images/speaker.jpg)
Rare metal that is used in the control rods of nuclear reactors, filaments for incandescent lamps and jet engines.
technetium ![click to hear](/images/speaker.jpg)
Radioactive metal (first element to have been produced artificially) that makes steel corrosion-free and is used in medical imaging.
molybdenum ![click to hear](/images/speaker.jpg)
Hard metal that is used in alloys (aircraft, missiles, nuclear reactors), electric lights and electronic tubes.
niobium ![click to hear](/images/speaker.jpg)
Rare metal that is used especially in alloys for jet aircraft, missiles, nuclear reactors, ointments and cutting tools.
zirconium ![click to hear](/images/speaker.jpg)
Metal that is used in alloys for the nuclear industry (protective sheathing, fuel rods) and in jewelry (imitation diamonds).
yttrium ![click to hear](/images/speaker.jpg)
Rare metal used in the manufacture of alloys, electronic components, lasers, television screens and in nuclear reactors.
manganese ![click to hear](/images/speaker.jpg)
Hard metal that is used mainly in the manufacture of specialty steels and household batteries; it is also an indispensable trace element for humans.
chromium ![click to hear](/images/speaker.jpg)
Bright metal that is used as an anticorrosive coating and in the manufacture of hard and resistant alloys; it gives emeralds and rubies their color.
vanadium ![click to hear](/images/speaker.jpg)
Metal that is used mainly in alloys, to which it provides highly anticorrosive properties.
titanium ![click to hear](/images/speaker.jpg)
Metal that is used in several alloys employed in the manufacture of precision items and as a coating for light aerospace parts.
scandium ![click to hear](/images/speaker.jpg)
Rare and very light metal that is employed in aerospace construction because of its high fusion point (about 2,700°F or 1,500°C).