Quiz
Transition elements (ocr) quiz
Perguntas do quiz (10)
1A transitional element is a d block element that forms at least one ion with an incomplete d sub-shell.
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2the d-block elements would have filled their 4s orbitals before their 3d orbitals( the 4s sub-shell has a lower energy than the 3d sub-shell ).
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3chromium which is a transition metal has its 3d and 4s orbitals half-filled(4s1 3d5)
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4copper only one electron is in the 4s orbital but the 3d orbital is full
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5To form positive ions transition element atoms loose electrons from their 4s sub-shell before their 3d subshell.
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6Properties specific to transition metal compounds in result to of their electron configuration(partially filled d-orbitals):
- Aexist as giant metallic lattices containing delocalised electrons which move to conduct electricity
- Bshiny in appearance
- Ccatalyse chemical reactions
- Dhigh density and melting point and boiling point
- Eform coloured compounds
- F form compounds in which they have different oxidation states
7transition metals from titanium to copper don't form the +2 oxidation state
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8KMnO4 is a purple solid used as a oxidising agent in redox titrations
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9important chemical reactions that are catalysed by transition metals or their compounds
- AHaber process
- Bpolymerisation
- CHydrogenation of alkenes
- Dacid hydrolysis
- EContact process
- FDecomposition of hydrogen peroxide
10All ligands are neutral
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Informações
- Descrição
- bits end pieces from the module that it is important to remember.
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- suzan
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- English
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