Polyatomic ions involve sharing of electrons (covalent) and gaining/losing electrons (ionic) to fulfill their octet.
Answers by Marcie B.
Most noble gases have 8 dots, two on each side but Helium has only two dots to complete its energy level, so 1 would be the correct response
Covalently bonded substances like water tend to be nonelectrolytes, which do not conduct electricity. Solid NaCl has its parts "locked" in place so electricity won't flow. The aqueous NaCl, means dissolved in water so the water separates the compound into ions and the ions allow it to be an electrolyte...