677778
Question 1
Question
A transitional element is a d block element that forms at least one ion with an incomplete d sub-shell.
Answer
- True
- False
Question 2
Question
the 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 ).
Answer
- True
- False
Question 3
Question
chromium which is a transition metal has its 3d and 4s orbitals half-filled(4s1 3d5)
Answer
- True
- False
Question 4
Question
copper only one electron is in the 4s orbital but the 3d orbital is full
Answer
- True
- False
Question 5
Question
To form positive ions transition element atoms loose electrons from their 4s sub-shell before their 3d subshell.
Answer
- True
- False
Question 6
Question
Properties specific to transition metal compounds in result to of their electron configuration(partially filled d-orbitals):
Answer
-
exist as giant metallic lattices containing delocalised electrons which move to conduct electricity
-
shiny in appearance
-
catalyse chemical reactions
-
high density and melting point and boiling point
-
form coloured compounds
-
form compounds in which they have different oxidation states
Question 7
Question
transition metals from titanium to copper don't form the +2 oxidation state
Answer
- True
- False
Question 8
Question
KMnO4 is a purple solid used as a oxidising agent in redox titrations
Answer
- True
- False
Question 9
Question
important chemical reactions that are catalysed by transition metals or their compounds
Answer
-
Haber process
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polymerisation
-
Hydrogenation of alkenes
-
acid hydrolysis
-
Contact process
-
Decomposition of hydrogen peroxide
Question 10
Question
All ligands are neutral
Answer
- True
- False
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