Àmì-ìdámọ̀ kẹ́míkà: Ìyàtọ̀ láàrin àwọn àtúnyẹ̀wò

'''Àmì-ìdámọ̀ kẹ́míkà''' is aje leta-1- ortabi -2-letter internationallyto agreedje codeamioro forgbigba akariaye fun [[chemical element|apilese kemika]] kan, usuallylopo derivedigba fromto theunwa namelati oforuko theapilese elementna, oftennígbà inpúpo ni [[Latin|Latini]]. TheLeta firstakoko letter,nikan only,ni o isje capitalisedninla. ForFun exampleapere, "He" isni the symbolami-idamo forfun [[Helium|'''hehi'''liumliom]] (English name, not known in [[ancient Roman]] times), "Pb" for [[lead]] ('''''p'''lum'''b'''um'' in Latin), "W" for [[tungsten]] ('''''w'''olfram'' in German, not known in Roman times). [[Systematic element name|Temporary symbols]] assigned to newly or not-yet synthesized elements use 3-letter symbols. For example, "Uno" was the temporary symbol for [[Hassium]] which had the temporary name of '''''U'''n'''n'''il'''o'''ctium''.