List of Elements
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Chemical element Chemical series Electron configuration 19 K Potassium Alkali metal 4s1 20 Ca Calcium Alkaline earth metal 4s2 21 Sc Scandium Transition metal 3d1 4s2 22 Ti Titanium Transition metal 3d2 4s2 23 V Vanadium Transition metal 3d3 4s2 24 Cr Chromium Transition metal 3d5 4s1 (*) 25 Mn Manganese Transition metal 3d5 4s2 26 Fe Iron Transition metal 3d6 4s2 27 Co Cobalt Transition metal 3d7 4s2 28 Ni Nickel Transition metal 3d9 4s1 (*) 29 Cu Copper Transition metal 3d10 4s1 (*) 30 Zn Zinc Transition metal 3d10 4s2 31 Ga Gallium Post-transition metal 3d10 4s2 4p1 32 Ge Germanium Metalloid 3d10 4s2 4p2 33 As Arsenic Metalloid 3d10 4s2 4p3 34 Se Selenium Nonmetal 3d10 4s2 4p4 35 Br Bromine Halogen 3d10 4s2 4p5 36 Kr Krypton Noble gas 3d10 4s2 4p6
(*) Exception to the Madelung rule
Some element categories in the periodic table
| Metals | Metalloids | Nonmetals | Unknown chemical properties |
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| Alkali metals |
Alkaline earth metals |
Inner transition metals | Transition metals |
Post-transition metals |
Other nonmetals |
Halogens | Noble gases |
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| Lanthanides | Actinides | |||||||||
Read more about this topic: Period 4 Element
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