Above is the Bohr Model for Iodine. The two numbers in the middle represent the protons and neutrons. The protons is the one with the P beside it and the neutrons is the one with the N beside it. The big circles around the numbers are a way of telling us what row Iodine is on the periodic table, in this case its row 5 so there are 5 outer circles. The dots represent how many electrons are in this element. Most of the time the number of protons is the same as the electrons and thats correct in this instant. Since there are 53 protons there are 53 electrons so there are 53 dots.