alkaline earth metals![click to hear](/images/speaker.jpg)
Generally silvery and malleable and good conductors of heat and electricity; they react easily with nonmetals and water.
radium ![click to hear](/images/speaker.jpg)
Extremely radioactive metal present in very low quantities in uranium ore; it is used mainly in medicine as a cancer treatment.
barium ![click to hear](/images/speaker.jpg)
Relatively abundant metal that is used especially in lubricants, pyrotechnics (fireworks), paint and radiology.
strontium ![click to hear](/images/speaker.jpg)
Relatively rare metal that is used especially in pyrotechnics (fireworks), the manufacture of magnets and medicine.
calcium ![click to hear](/images/speaker.jpg)
Metal that is one of the most essential elements in bones and teeth; it is also a component of cement, plaster and some alloys.
magnesium ![click to hear](/images/speaker.jpg)
Metal necessary for the growth and metabolism of most living organisms; it is also a component of aluminum alloys.
beryllium ![click to hear](/images/speaker.jpg)
Uncommon metal that is used especially in alloys for the aerospace industry and as a moderator in nuclear reactors.