2. Carbon-11 is a radioactive isotope of carbon. Its half-life is 10 minutes. What fraction of the initial number of carbon-11 atoms in a sample will
remain after 50 minutes? *
1/64
O 1/8
01/16
O 1/32

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.