Answer:
its c i got right on test
Explanation:
Period: 6 block
Group: f block
Family: Lanthanides
6.4mole•64.06g/1mole=409.98g
The answer is B. Below freezing
chemical energy, Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic.