How can you use the periodic table to predict the charge of an ion

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?