What is the oxidation state of manganese () in the polyatomic permanganate anion ()?

According to VSEPR theory, for the ammonium ion (), the electron-pair geometry is __________ and the molecular geometry is __________.

What are the mass percents of C, H, and O, respectively, in a molecule of glucose monomer ()?

What is the name for the following polyatomic ion: (also written )?