Who wants to be my bestie

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

Which two particles are found in the center of an atom

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?