Roberto was testing how light interacted with a material he had just developed. The initial speed of light was
3.0 x 108 m/s. The final speed of light after it changed direction was 1.7 x 108 m/s.
What type of interaction took place?

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?