What information does the atomic mass of an element provide? a. the sum of electrons and protons in an atom b. the number of protons and neutrons in an atom c. the difference between the number of protons and electrons d. the difference of isotopes

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