Which one has higher mass and why 2g of hydrogen or 6.023x10²¹ molecules of oxygen?

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds