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
