What are the properties of the Group I, II, and III cations that permit their se

Question

What are the properties of the Group I, II, and III cations that permit their separation by groups? 2. (1) What is the electron configuration of Hg^+ ion? (2) Why does it actually exist as Hg_2^2+ ion rather than as Hg^+ ion? (3) When Hg_2^2+ ion disporportionates, why does it become Hg(s) and Hg^2+ ion rather than form specifed with some other oxidation numbers? 3. FeS(s) dissolved by the additon of HNO_3 in a manner similiar to that of CuS(s). In the process, the Fe^2+ ion is oxidized to Fe^3+ ion. Write an equation for this reaction.

Explanation / Answer

1)

Group 1 cations- Form insoluble chlorides
Group 2 cations- Form acid-insoluble sulfides
Group 3 cations - Form sulfides that are insoluble in a basic Solution

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