ELECTRON CONFIGURATION AND PERIODIC TABLE

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ELECTRON CONFIGURATION AND PERIODIC TABLE
Resources Nigel Saunders, Creative Chemistry
ByAyse Yavuz
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Energy levels and sub-levels

• These are broadly similar to the shells used in
  Grade 9 Chemistry

Energy level 1(n 1) is lowest in energy and
closest to the nucleus. It is called the ground
state and is the most stable level.
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Energy levels and sub-levels

• The main energy levels contain sub-levels

• The different main energy levels have different
  sub-levels in them

There are four types s, p, d, f
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Energy levels and sub-levels
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Ionisation energies and group numbers
Successive ionisation energies for potassium
Potassium is in group 1 Notice the jump in
energy needed to remove the 2nd electron
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Ionisation energies and group numbers
Successive ionisation energies for potassium
The different jumps are evidence for the
arrangement of electrons in energy levels and
sub-levels
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Ionisation energies and group numbers
Which group is this element in?
Group 4 Notice the jump in energy needed to
remove the 5th electron
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Ionisation energies and group numbers
Which group is this element in?
Group 2 Notice the jump in energy needed to
remove the 3rd electron
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Ionisation energies and group numbers
Which group is this element in?
Group 3 Notice the jump in energy needed to
remove the 4th electron
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Ionisation energies and group numbers
Which group is this element in?
Group 5 Notice the jump in energy needed to
remove the 6th electron
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Ionisation energies and group numbers
Which group is this element in?
Group 1 Notice the jump in energy needed to
remove the 2nd electron
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Electronegativity
What is it?

• Electronegativity is the power of an atom to
  attract electron density ?

in a covalent bond ?
Remember the definition look for where you
get the ticks!
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Electronegativity
Paulings electronegativity scale

• The higher the value, the more electronegative
  the element

• Fluorine is the most electronegative element

• It has an electronegativity value of 4.0

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Electronegativity
Paulings electronegativity scale
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Electronegativity
Paulings electronegativity scale
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Electronegativity
Paulings electronegativity scale
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Electronegativity
Paulings electronegativity scale
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Electronegativity
Paulings electronegativity scale