Ma’anar ƙamus na “atomic number 97” ita ce kamar haka:Atomic lamba 97 tana nufin adadin protons da aka samu a tsakiyan kwayar zarra na wani sinadari mai suna Berkelium (Bk). Berkelium wani sinadari ne na rediyo kuma memba ne na jerin abubuwa na actinide. Glenn T. Seaborg, Albert Ghiorso, Stanley G. Thompson, da Kenneth Street Jr. ne suka fara haɗa shi a cikin 1949 a Jami'ar California, Berkeley. Berkelium yana da lambar atomic na 97, wanda ke nufin cewa tsakiya na atom na berkelium ya ƙunshi protons 97. Lambar atomic wani abu ne na asali kuma yana ƙayyade matsayinsa a cikin tebur na lokaci-lokaci.