IAL chemistry covalent bonding with answers

IAL chemistry lesson on covalent and dative bonds with answers.

3.10 understand that covalent bonding is the strong electrostatic attraction between two nuclei and the shared pair of electrons between them, based on the evidence:
i the physical properties of giant atomic structures
ii electron density maps for simple molecules
3.11 be able to draw dot-and-cross diagrams to show electrons in covalent substances, including:
i molecules with single, double and triple bonds
ii species with dative covalent (coordinate) bonds, including Al2Cl6 and the ammonium ion
3.13 understand the meaning of the term ‘electronegativity’ as applied to atoms in a
covalent bond
3.14 know that ionic and covalent bonding are the extremes of a continuum of bonding type and be able to explain this in terms of electronegativity differences, leading to bond polarity in bonds and molecules, and to ionic bonding if the electronegativity is large enough
3.12 be able to describe the different structures formed by giant lattices of carbon atoms, including graphite, diamond and graphene, and discuss the applications of each