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УрицкаяСредняяШкола
@УрицкаяСредняяШкола
August 2022
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Определите валентность химических элементов по формулам соединений:
HBr/CaH2/N2O5/PbO2.
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Answers & Comments
mary984134
HBr - H(1), Br(1)
CaH2- Ca (2), H(1)
N2O5-N(5), O(2)
PbO2-Pb(4), O(2)
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Answers & Comments
CaH2- Ca (2), H(1)
N2O5-N(5), O(2)
PbO2-Pb(4), O(2)