Astudent pushes against a tree with a force of 10 newtons (n). the tree does not move. what is the amount of force exerted by the tree on the student?

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?