A solution containing an unknown metal ion is analyzed by qualitative analysis.Addition of chloride has no effect on the solution.Addition of H2S at pH 0.5 results in no precipitate.Addition of H2S at pH 9.0 results in no precipitate.What group(s) of cations may be present?
A) Group I
B) Group II
C) Group III
D) Group IV
E) None of the groups
Correct Answer:
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