Describe the covalent bond as the electrostatic attraction between a pair of electrons and positively charged nuclei.
Describe how the covalent bond is formed as a result of electron sharing.
Deduce the Lewis (electron dot) structures of molecules and ions for up to four electron pairs on each atom.
State and explain the relationship between the number of bonds, bond length and bond strength.
Predict whether a compound of two elements would be covalent from the position of the elements in the periodic table or from their electronegativity values.
Predict the relative polarity of bonds from electronegativity values
Predict the shape and bond angles for species with four, three and two negative charge centres on the central atom using the valence shell electron pair repulsion theory (VSEPR).
Predict whether or not a molecule is polar from its molecular shape and bond polarities.
Describe and compare the structure and bonding in the three allotropes of carbon (diamond, graphite and C60 fullerene).
Describe the structure of and bonding in silicon and silicon dioxide.
Learning Goals: (6 hours)