Explain how you figure out the number of neutrons in tellurium-128.

76

Explanation:

128 is the mass number. it means protons+nutrons=128

then the atomic number of te-128 is 52. atomic number means the number of protons .

so 128-52=76.

if you don't get it, I'll explain it later

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.