I need help in Science 1)List the ion symbol for the following elements: Sodium, Magnesium, Chlorine, and Oxygen

2)Is Li+ a cation or anion? Explain your answer.

This type of galaxy is an approximately ellipsoidal shape and a smooth, nearly featureless image. they are the largest single star systems, in the universe and are built by the collisions of many smaller galaxies.

Some of her  assignments would be creation of drugs. she is a medical chemist after all so she'd need to have the necessary knowledge to make medicine which can later be sold in a pharmacy