3. Copper has 2 isotopes. Cu-63 has a mass 62.930 amu at 69.09 % abundance, while the remainder is Cu-65 which has a mass of 64.928 amu Calculate the atomic mass of copper​

hi my dude or dudette

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.

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explanation: