2.56 g of a metal oxide, MO, is reduced to 1.92g of the metal, M. What is the relative atomic mass of M?
A 48
B 96
С128
D192

well in order to answer this question you have to provide more information < 3

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.