Heat energy is:

a. the internal motion of atoms
b. stored in the bonds of atoms
c. stored in the nucleus of atoms
d. moving electrons

all and any is appreciated

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?