Why is lithium bigger than iodine?

Lithium has a larger atomic radius than iodine because it has lower charges in the atom itself. Lithium has 3 protons and 3 electrons. Iodine has 53 protons and electrons. read more

Lithium has a larger atomic radius than iodine because it has lower charges in the atom itself. Lithium has 3 protons and 3 electrons. Iodine has 53 protons and electrons. Therefore, the protons and electrons in iodine attract each other more than in iodine, making the electron cloud and atomic radius smaller. read more

Obviously cesium is having more number of protons than iodine, so cesium nucleus can hold it's electrons more closer in cesium than iodine nucleus in an iodine ion which results in larger radius of iodine ion than cesium.. read more

Lithium ions are smaller than lithium atoms. This is because the lithium atom has 2 shells, while the ion just has one shell. Bromide ions are larger than bromine atoms, due to increased inter-electronic respulsion. Atomic radius of lithium is 134 pm. Atomic radius of bromine is 114 pm. Lithium atoms are bigger than bromine atoms. read more