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英語の理科

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  • extrabold
  • ベストアンサー率30% (7/23)
回答No.1

陽イオン(カチオン)と陰イオン(アニオン)のことで説明できると思いますよ。 Feは2+、3+にせよカチオン、Sは2-でアニオン、Znは2+のカチオン。

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