Trends in Melting Points of Metals The?strength?of electrostatic attraction can be increased by: Increasing?the number of?delocalised?electrons?per metal atom Increasing?the?positive?charges?on the...
Metallic Bonding Metal?atoms are tightly packed together in?lattice?structures When the metal atoms are in?lattice?structures, the electrons in their outer shells are free to move throughout the st...
Properties of Covalent Compounds The physical properties of?molecular covalent compounds?are largely influenced by their?intermolecular forces If you know the type of?intermolecular forces?present ...
Deducing Intermolecular Forces In order to deduce the types of?intermolecular forces?present in molecules you need information about the structure and chemical formula of the molecules The chemical...
Intermolecular Forces There are no covalent bonds between molecules in molecular covalent compounds. There are, however, forces of attraction between these molecules, and it is these which must be ...
Giant Covalent Structures Covalent lattices Covalent bonds?are bonds between nonmetals in which electrons are?shared?between the atoms In some cases, it is not possible to satisfy the bonding capac...
Molecular Polarity Assigning polarity to molecules There is a difference between?bond polarity?and?molecular polarity? To determine whether a molecule?is polar, the following things have to be take...
Predicting Shapes & Bond Angles Before you predict the shape of any molecule work out the Lewis structure to determine the number of bonding and lone pairs Apply the VSEPR rules and you should ...
Shapes of Molecules When an atom forms a covalent bond with another atom, the electrons in the different bonds and the non-bonding electrons in the outer shell all behave as negatively charged clou...
