Heerka 2 ee curiye
Elements
[wax ka badal | wax ka badal xogta]Chemical element Chemical series Electron configuration 3 Li Lithium Alkali metal [He] 2s1 4 Be Beryllium Alkaline earth metal [He] 2s2 5 B Boron Metalloid [He] 2s2 2p1 6 C Carbon Nonmetal [He] 2s2 2p2 7 N Nitrogen Nonmetal [He] 2s2 2p3 8 O Oxygen Nonmetal [He] 2s2 2p4 9 F Fluorine Halogen [He] 2s2 2p5 10 Ne Neon Noble gas [He] 2s2 2p6
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