October 2022 1 7 Report
Jaką wartościowość ma
1) fosfor w [tex]PO_{4}^{3-}[/tex]
2) siarka w [tex]H_{2}S[/tex]
3) siarka w [tex]H_{2}SO_{3}[/tex]
4) siarka w [tex]H_{2}SO_{4}[/tex]

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