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Period 4 Elements

Elements in period 4 have the same number of electron shells (4).

19KPotassium39.09820CaCalcium40.07821ScScandium44.95622TiTitanium47.86723VVanadium50.94224CrChromium51.99625MnManganese54.93826FeIron55.84527CoCobalt58.93328NiNickel58.69329CuCopper63.54630ZnZinc65.3831GaGallium69.72332GeGermanium72.6333AsArsenic74.92234SeSelenium78.97135BrBromine79.90436KrKrypton83.798