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A Level AQA Chemistry - Transition Metals questions fully solved & updated(100- accuracy).
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A Level AQA Chemistry - Transition Metals questions fully solved & updated(100- accuracy).
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A Level AQA Chemistry -Transition Metals questions fully
solved & updated(100% accuracy)
What is a transition metal? - answer A metal that can form one or more
stable ions with a partially filled d sub-level
Why is scandium not a transition metal? - answer When it forms a 3+ ion,
it has an empty d sub-level
Why is zinc not a transition metal? - answer Has a full d sub-level, even
when it forms Zn2+
What are 2 physical properties of transition metals? - answer High density,
high melting and boiling point
What are 4 chemical properties of transition metals? - answer Form
complex ions, form coloured compounds, good catalysts, variable
oxidation states
What is a complex ion? - answer Metal ions surrounding ligands
What is a ligand? - answer An atom, ion or molecule that donates a pair of
electrons to a central metal ion = coordinate bond
What is the coordination number? - answer Number of coordinate bonds
that are formed with the central metal ion
Which molecules tend to have a coordination number of 6? - answer Small
ligands (H20/NH3)
, Which molecules tend to have a coordination number of 4? - answer Larger
ligands (Cl-)
How do you work out the oxidation state of a metal ion? - answer total
charge - sum of charge on ligands
Colour of Ti2+ - answer +2, violet
Colour of Ti3+ - answer +3, purple
Colour of V2+ - answer +2, violet
Colour of V3+ - answer +3, green
Colour of VO 2+ - answer +4, blue
Colour of VO2 + - answer +5, yellow
Colour of Cr3+ - answer +3, green
Colour of Cr2O7 2- - answer +6, orange
Colour of Mn2+ - answer +2, pale pink
Colour of MnO4 2- - answer +6, green
Colour of MnO4- - answer +7, purple
Colour of Fe2+ - answer +2, pale green
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