What would the chemical formula of the compound look like if you combined Calcium and Iodine?
The formation reaction is:
This is in fact a redox reaction: calcium metal metal is oxidized up to
How do you know this occurs save by memory? Another way is to consider their positions in the Periodic Table. Calcium is a Group 2 metal, that has 2 valence electrons; its reactivity is chatacterized by its tendency to LOSE its valence electrons to form the