Write the symbol for an element in the fourth period (row) of the periodic table with All unpaid S electrons and all unpaired P electrons

What is the molar mass of potassium nitrate, kno3

Will mark brainliest how many electrons can be held in the energy level n = 4?

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