Which half-reaction would likely occur at the anode of a fuel cell that uses hydrogen as a fuel?
hydrogen atoms becoming hydrogen ions
hydrogen ions joining with oxygen to form water
hydrogen ions becoming hydrogen atoms
hydrogen atoms joining with oxygen to form water

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.