最終更新日：2025/12/01
Scientists are studying oganesson to determine whether the heaviest known element behaves more like a reactive metal or an inert noble gas.
正解を見る
Scientists are studying oganesson to determine whether the heaviest known element behaves more like a reactive metal or an inert noble gas.
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）
