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Which of these hydrated cations are colorless: Fe2 (aq), Zn2 (aq), Cu (aq), Cu2 (aq), V5...

Which of these hydrated cations are colorless: Fe2 (aq), Zn2 (aq), Cu (aq), Cu2 (aq), V5 (aq), Ca2 (aq), Co2 (aq), Sc3 (aq), Pb2 (aq)? Explain your choice.

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