Какими ионами могут быть Х2+ и Y-?
XY2 = X2+ + 2Y-
X2+ + Н20 = ХОН+ + Н+

  1. Ba2+ F-
  2. Cu2+ Cl-
  3. Ca2+ Cl-
  4. Fe2+ F-
10 / 44 (23%)
Question 10 of 44
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