GROUP 1 BONDING ALKALI METALS

1
GROUP 1 BONDINGALKALI METALS

• Bond only by ionic bonding to become 1 ions with
  noble gas configurations.
• The ions are isoelectronic to the noble gas of
  the PREVIOUS period, which is the kernel of that
  element.
• Low electronegativity and low ionization energy
  causes the outer s electron to be lost.
• As you read down the group, electronegativity,
  ionization energy DECREASE, atomic radius
  INCREASES as does reactivity. See concept map.
• All positive ions are smaller than the neutral
  atom from which they are derived, due to a lost
  electron.

2
EXAMPLES

• The configuration of Neon

1s2??
2s2 ?? 2p6 ?? ?? ??
1e -

3
Ionization and Oxidation

• The removal of an electron is called IONIZATION,
  the energy that must be supplied to do so is
  called IONIZATION ENERGY. This process is
  endothermic energy consuming, energy must be
  supplied and absorbed.

The electron is free of the atom
1e-