Ok but how many valence electrons does an atom of Iodine have? When halogens get electrons they give up energy. If there are two numbers, get rid of the first and keep the first one. Valence electrons of an atom are located in the outermost shell of the atom and participate in bonding. In the Lewis structure, therefore, we have to distribute #6xx7# valence electrons, and therefore 21 valence electron pairs.The central iodine atom has a single lone pair, and each chlorine atom bears 3 lone pairs. 2.What type of bond is formed between the two nitrogen atoms in diatomic nitrogen, N 2? Directly onto the Lewis Structure you drew above, label the three oxygen atoms as a, b, and c Calculate the formal charge of each type of atom in the Lewis structure and use these values to find the sum of the formal charges. 1. read more. 53 electrons (white) successively occupy available electron shells (rings). Each halogen has maximum electron affinity in a period but in halogen family, it decreases from fluorine to iodine. Electron affinity is the energy released when an electron is added to neutral gaseous atom forming a univalent negative ion. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. group 17 Where on the periodic table is it located? The electrons in the outermost shell are the valence electrons the electrons on an atom that can be gained or lost in a chemical reaction. B. Iodine (I). Adding 1oz of 4% solution to 2oz of 2% solution results in what percentage? While iodine has 53 electrons, all but seven are in the inner shells of the iodine atom. A. Halogens Alkali Metals We know that the atomic number of iodine is 53.So iodine has 53 protons and 53 electrons as the charge of electrons and protons are equal but opposite in nature.The charge of proton is +1 and the charge of electron is -1. Group 17, Period 5, Block P How many protons, neutrons, and electrons? Diagram of the nuclear composition, electron configuration, chemical data, and valence orbitals of an atom of iodine-127 (atomic number: 53), the most common isotope of this element. Provide examples. Well put the iodine here and the chlorine right next to it. Iodine is a diatomic molecule so its molecules are paired as i2 iodine has 7 electrons in its outer shell so 1 electron …