Question

1.The number of ligands and oxidation number present in the compound [Fe(H2O)6] 3+ is


A. 6 and 3

B. 3 and 6

C. 3 and 2

D. 2 and 3

2.Which of the following statement best describe the similarities between

copper and zinc?


A. They occur in their native state in nature.

B. Both metals dissolve in aqua-regia.

C. Both metals exhibit bivalency.

D. Both metals


3. Ammonium hydroxide is added to a solution. The solution formed a sky

blue precipitate which turned deep blue in excess of ammonium hydroxide. Name the cation present in the solution.


A. Fe2+

B. Zn2+

C. Cu2+

D. Pb2+​

Answer 1

Answer:

1.A 6 and 3

* 6 aqua ligands and present which are neutral. Hence, the oxidation state is +3.

2.B Both metals exhibit bivalency.

3.C Cu2+.