Aprincipal quantum number refers to:
the numbered energy levels starting from the nucleus outward
the total energy of an electron
the maximum number of electrons at a given level
the s, p, d, f levels

Which statement about the stamps is correct?

How many atoms are there in 5.70 mol of mg

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.