How many energy levels does calcium have
how many energy levels are there how many energy levels does hydrogen have how many energy levels does lithium have how many energy levels does calcium have how many energy levels does oxygen have how many energy levels does potassium have how many energy levels does zirconium have how many energy levels does chlorine have how many energy levels does boron have how many energy levels does sodium have how many energy levels does carbon have how many energy levels does tin have how many energy levels does neon have how many energy levels does radon have how many energy levels does magnesium have how many energy levels are there in an atom