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Flashcards in Transition Metals Deck (14)
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0

Why do transition metals show a range of oxidation states?

Because the 3d and 4s energy levels are very close

1

What is the
•shape
•formula
•colour
of the Hexaaqua copper (II) ion?

•Octahedral
• [Cu(H2O)6] 2+
• Blue

2

What is the
•Name
•Shape
•Colour
of the [Cu(NH3)4(H2O)2] 2+ ion?

•Tetraaminediaqua copper (II) ion

•Octahedral

•Deep Royal Blue

3

What compound is formed when a small amount of dilute ammonia is added to Cu 2+?

Cu(OH)2 ppt

4

What is the
•shape
•formula
•colour
of the Terachlorocuprate (II) ion?

•Tetrahedral
•[CuCl4]2-
•Yellow

5

What colour is Fe2+ aqueous?

Pale Green

6

What colour is Fe3+ aqueous?

Yellow

7

What colour is Cr3+ aqueous?

Green

8

What colour is Cu2+ aqueous?

Blue

9

What colour is Fe2+ with NaOH?

Dirty green and red oxidised layer

10

What colour is Fe3+ with NaOH?

Rust coloured

11

What colour is Cr3+ with small amount of NaOH?

Grey-Green

12

What colour is Cr3+ with NaOH in excess?

What is the formula?

Dark green solution

[Cr(OH)6] 3-

13

What is the general equation for the precipitation of TM ions with NaOH?

M2+/M3+ + 2OH-/3OH- = M(OH)2/
M(OH)3