Lambar atomic 38 tana nufin adadin protons da ke cikin tsakiya na kwayar zarra na sinadarin strontium (Sr). Strontium yana da lambar atomic na 38, wanda ke nufin cewa tsaka-tsakin zarra na strontium yana da protons 38 da 38 electrons. Lambar atomic muhimmin abu ne na sinadari kuma yana ƙayyade matsayinsa a cikin tebur na lokaci-lokaci. Strontium karfe ne mai laushi, mai launin azurfa-fari wanda ke da karfin gaske kuma ana iya samuwa a cikin yanayi azaman isotopes daban-daban. Yana da aikace-aikace iri-iri a cikin masana'antu, gami da samar da ferrite maganadisu, tace zinc, da kera pyrotechnics.