1.1a Recall the simple model of an atom in terms of
electrons, protons and neutrons
1.1b Recall the definition of relative isotopic,
relative atomic, and relative molecular masses and understand
that they are measured on a scale in which 12 C = 12
exactly
1.1c Understand the relationships between the numbers
of protons and neutrons in an atom and its atomic number, mass
number and relative isotopic mass.
1.1d Recall the existence of isotopes and their
relevance to the relative atomic mass of an atom.
1.1e Understand the principles and use of the
low-resolution mass spectrometer to determine relative atomic
mass; interpret mass spectrometric data to make simple deductions
(i) concerning the isotopic composition of a sample of an element
(ii) to calculate its relative atomic mass
(iii) to deduce the relative molecular mass and fragmentation patterns of simple
molecules.
1.1f Recall the definitions of first and successive
ionisation energies
1.1g Understand that successive ionisation energies
provide evidence for the existence of quantum shells
· limited to the first twenty elements
· data may be provided in graphic or tabular form
1.1h Understand that first ionisation energies of
successive elements provides evidence for the existence of
characteristic energy levels of s, p and d orbitals
· The hydrogen spectrum will not be examined
1.1i Understand the terms s, p and d-block elements
· the distinction between a d-block element and a transition
element will not be required until topic 5.2
1.1j Predict the electronic configuration of isolated
atoms of the elements from hydrogen to krypton inclusive (using
1s, 2p, ... notation and electrons-in-boxes notations) using the
building-up principle
1.1k Understand that electronic structure determines
the chemical properties of an element
1.1l Define first and second electron affinities and
understand that the second electron affinity is endothermic.