Indonesian Kalsium Cited by user Wiz Qyurei on 24 Mar 2023 Kalsium atau zat kapur adalah sebuah unsur kimia dengan lambang Ca dan nomor atom 20.
Chinese 钙 Cited by user Nucleus hydro elemon on 11 Jul 2022 钙（；Calcium），是一種化學元素，其化學符號为，原子序數为20，原子量為40.078 u. 作为碱土金属，钙的化學活性頗高，暴露于空气下就会形成深色的氧化物和氮化物.
English Calcium Cited by user Materialscientist on 08 Mar 2010 Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when…