In a traffic jam when drivers can't get where they are going on time or at the expected speed of travel this is referred to as what? a.) restrictionb.) distractionc.) regulationd.) obstruction

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?