KnowraPeriod 3 elementLinked fromLinked fromThe 2 pages that link to Period 3 element, each with the reason it gives.All 2Compared with 2Period 2 elementCompared with: Its larger valence shell allows bonding patterns unavailable to Period 2 elements.Period 4 elementCompared with: The preceding period lacks the 3d transition-metal series found in Period 4.