Classify each solid as a covalent, ionic, metallic, or molecular solid. drag the appropriate items to their respective bins. frozen ethanol calcium fluoride rhombic sulfur pure calcium

Calcium chloride is made up of positive calcium ions and negative chloride ions that are mutually attracted to each other, which is the essence of an ionic bond. So, CaCl2 is an ionic solid.
Pure calcium is an element in which the element is bound together by a metallic bond, and thus, is a metallic solid.
Frozen Ethanol is a molecular solid
Rhombic sulfur also has a covalent bond.

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.