Identify the group of ONLY metalloids. a
aluminum, silicon, phosphorous, sulfur
b
hydrogen, helium, lithium, beryllium
c
boron, germanium, arsenic, silicon
d
boron, carbon, nitrogen, oxygen

answer: c.

explanation:

i think slash and

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.

4d^55s^1 ( third choice)