Ru
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Er
Er(CH3COO)3 • 4H2O
Er2(CO3)3 • 4H2O
ErCl3
ErF3
Er2(MoO4)3
Er(NO3)3 • 5H2O
Er2O3
Er2(SeO4)3 • 8H2O
Er2(SO4)3 • 8H2O
"It is impossible to learn chemistry in any way without seeing the practice itself and not starting chemical operations." (M.V.Lomonosov)
"It is impossible to learn chemistry in any way without seeing the practice itself and not starting chemical operations."
(M.V.Lomonosov)
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