8.4 Transition Elements (Cambridge (CIE) O Level Chemistry): Flashcards
Exam code: 5070
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- FrontTransition Elements
Transition elements form .......... compounds and can have more than one .......... state.
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Transition elements form .......... compounds and can have more than one .......... state.
Transition elements form coloured compounds and can have more than one oxidation state.
Why are transition elements commonly used as industrial catalysts?
Transition elements have variable oxidation states, which allow them to transfer electrons during reactions and act as catalysts without being permanently used up.
Transition elements are .......... conductors of heat and electricity, are .......... and strong and have .......... melting points compared to Group I metals.
Transition elements are good conductors of heat and electricity, are hard and strong and have high melting points compared to Group I metals.
True or False?
Zinc is a transition element because it is located in the transition element area of the Periodic Table.
False.
Zinc is not a transition element as it has only one oxidation state and does not form coloured compounds.
The transition element used as a catalyst in the Haber process is ............
The transition element used as a catalyst in the Haber process is iron.
What two oxidation states does iron commonly form, and how does this affect its compounds?
Iron forms Fe2+ (oxidation state +2) and Fe3+ (oxidation state +3).
Compounds containing iron in different oxidation states have different properties and colours.
What are transition elements?
Transition elements are the metals in the central block of the Periodic Table (between Groups II and III) that are characterised by high melting points and densities, variable oxidation states, the ability to form coloured compounds, and their common use as catalysts.
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