Unit 2 Application of Core Principles of Chemistry - 2.3 - Shapes of molecules and ions

Students will be assessed on their ability to:

a) demonstrate an understanding of the use of electron-pair repulsion theory to interpret and predict the shapes of simple molecules and ions

b) recall and explain the shapes of BeCl2, BCl3, CH4, NH3, NH4+, H2O, CO2, gaseous PCl5 and SF6 and the simple organic molecules listed in Units 1 and 2

c) apply the electron-pair repulsion theory to predict the shapes of molecules and ions analogous to those in 2.3b

d) demonstrate an understanding of the terms bond length and bond angle and predict approximate bond angles in simple molecules and ions

e) discuss the different structures formed by carbon atoms, including graphite, diamond, fullerenes and carbon nanotubes, and the applications of these, eg the potential to use nanotubes as vehicles to carry drugs into cells.