Which of the following types of radiation can be blocked with only a sheet of paper? beta decay, gamma decay, they are equally dangerous, alpha decay

lol idk man i guess u gotta ask bill nye the science guy

it's c. elements are placed in rows based on how may valencies electrons have.

answer; natural resources;

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.