1.
a soft, silvery-white, light metal that is used in batteries, ceramics, and glass
2.
a soft, silvery-white, highly reactive metal that is essential for the human body
3.
A solid, silvery-gray metal at room temperature
4.
Highly reactive, ignites spontaneously in air and reacts violently with water
5.
soft, silvery-gold alkali metal with the symbol "Cs" and atomic number 55
6.
extremely radioactive with its most stable isotope having a half-life of only 22 minutes
