F325 OCR A2 Chemistry - Transition Elements

Electronic Confiqurations,  Properties, Colours, Catalysis and Precipitation.

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  • Created by: Maria
  • Created on: 12-05-12 16:46
Define a transition element?
it is a d-block element that forms an ion with an incomplete d sub-shell
1 of 10
What block on the periodic table do the transition elements reside?
d-block
2 of 10
Does the 4s sub-shell have a lower energy than the 3d sub-shell?
Yes
3 of 10
On the periodic table there are two elements that have 1 electron in the 4s sub-shell, what are they?
Copper and Chromium
4 of 10
Transition elements first lose electrons from?
4s sub-shell
5 of 10
How many different oxidation states does Manganese have?
7
6 of 10
The highest oxidation state of a transition element is often found in a strong oxidising agent?
True
7 of 10
Precipitation - what colour change would you observe when NaOH is added to Fe +2 ions?
pale green solution which forms a green precipitate turning rusty brown on surface when standing in air
8 of 10
Cobalt +2 ions are what colour
pink
9 of 10
When cobalt +2 ions react with NaOH, what is the result?
A blue precipitate which turns beige in presence of air
10 of 10

Other cards in this set

Card 2

Front

What block on the periodic table do the transition elements reside?

Back

d-block

Card 3

Front

Does the 4s sub-shell have a lower energy than the 3d sub-shell?

Back

Preview of the front of card 3

Card 4

Front

On the periodic table there are two elements that have 1 electron in the 4s sub-shell, what are they?

Back

Preview of the front of card 4

Card 5

Front

Transition elements first lose electrons from?

Back

Preview of the front of card 5
View more cards

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