最終更新日：2025/11/19
Calcium (Ca), atomic number 20, is a soft, silvery-white alkaline earth metal that commonly occurs as carbonate in limestone and as silicate in many rocks.
正解を見る
Calcium (Ca), atomic number 20, is a soft, silvery-white alkaline earth metal that commonly occurs as carbonate in limestone and as silicate in many rocks.
音声機能が動作しない場合はこちらをご確認ください
編集履歴（0）
