Sodium
Na
information
the atomic number is 11. the mass number is 22.990. it is in period 3. sodium is in group 2. it is in the alkali family. sodium is a solid. it is a metal.
heat exchanger
sodium is used to exchange heat through a nuclear reactor.
salt
sodium is a common salt used to put in daily foods.
water softener
Sodium carbonate is also a useful sodium salt. It is used as a water softener.