Lecture SK015 1.1 Atoms and Molecules

00:00 Isotope Notation 04:20 Identifying no. of protons, neutrons and electrons 08:23 Interpreting mass spectrum 15:29 Calculate average atomic mass/ relative atomic mass when isotopic mass and abundance are given 18:12 Calculation from ratio abundance 20:31 To find percentage abundance 23:34 Calculation from mass spectrum