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Title: CIE A Level Transition Element Slide Show Notes
Description: CIE A2 Level Transition Element Slide Show Notes,Very Details
Description: CIE A2 Level Transition Element Slide Show Notes,Very Details
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Transition Elements
Definition
Definition
Definition
Definition
Characteristic Properties
1
...
2
...
• Have variable oxidation numbers in compounds
...
• Form coloured ion in water
...
6
...
7
...
Comparison with s-Block Elements
Property
Transition elements
Calcium
Melting point
Very high
Lower than transition
elements
Density
Very high
Low
Atomic radius
Smaller than calcium
Larger than transition
elements
Ionic radius(M2+ ions)
Smaller than calcium
Larger than transition
elements
First ionisation energy
Larger than that of calcium
Smaller than that of
transition elements
Electrical conductivity
Good but poorer than
calcium
Very good, better than
transition elements
General Chemical Properties of Transition
Elements
General Physical Properties of Transition
Elements
General Physical Properties of Transition
Elements
General Physical Properties of
Transition Elements
Melting points
Transition elements generally are metals
and they have relatively high melting and
boiling points
...
As the proton No
...
The inner electrons are between the nucleus and 4s
subshell and are able to shield the outer electrons
from the increasing nuclear force, therefore
cancelling the effect of the increasing nuclear
force across a period
...
This is because:
The atomic radii remain almost constant
from Ti to Cu
(b) The attractive forces on the outer
electrons remain almost constant from Ti
to Cu
...
This is because the five inner d orbitals are at a
similar energy level to the outer s orbital
...
Ionic bonds form
when 4s and then 3d electrons are lost to produce
positively charged ions
...
The table below shows the main oxidation states
(bold being the most important) and the electronic
structures of the elements titanium to copper
...
Quiz
(a)
(b)
(c)
Define what is the meaning of transition
elements
...
State five characteristics of transition
elements
...
Are all d-block elements considered as
transition elements? If no, give examples
and state the reason
...
Quiz
(d) State and draw the electronic configuration for
Chromium(p
...
n 25), iron(p
...
n 27) and nickel(p
...
(e) Explain with comparison s-block elements the
explain in changes in
Melting point
(ii) Atomic radii
(iii) Ionisation energy
(i)
across the block
Quiz
(d) State and draw the electronic configuration for
Chromium(p
...
n 25), iron(p
...
n 27) and nickel(p
...
(e) Explain with comparison s-block elements the
explain in changes in
Melting point
(ii) Atomic radii
(iii) Ionisation energy
(i)
across the block
Quiz
(e) Given above are the ionisation energies for Ca
and Fe
...
Variable Oxidation States in Compounds
The +2 oxidation state is generally due to the
loss of two 4s electrons from the outer shell to
form and M2+ ion
...
For example, the maximum oxidation state of
Chromium VI is due to the use of all the 3d5 and
4s1 electrons for bonding
...
Transition Element Complexes
Transition Element Complexes
Transition Element Complexes
Transition Element Complexes
Transition Element Complexes
Transition Element Complexes
Colour of complexes
Colour of complexes
Colour of complexes
Colour of complexes
Colour of complexes
Colour of complexes
Colour of complexes
Transition Elements as Catalyst
Transition Elements as Catalyst
Transition Elements as Catalyst
Title: CIE A Level Transition Element Slide Show Notes
Description: CIE A2 Level Transition Element Slide Show Notes,Very Details
Description: CIE A2 Level Transition Element Slide Show Notes,Very Details