Electronic Configurations of Atoms & Ions The?principal quantum shells?increase in energy with increasing?principal quantum number E.g.?n?= 4 is higher in energy than?n?= 2 The?su...
Orbital Shapes Orbitals Subshells contain one or more?atomic orbitals Orbitals exist at?specific?energy levels and electrons can only be found at these specific levels,?not?in between them E...
Developing Electronic Configuration Electrons move rapidly around the nucleus in energy shells If their energy is increased, then they can jump to a higher energy level The process is revers...
Factors Affecting Ionisation Energy Ionisation energy The?ionisation?Energy?(IE) of an element is the amount of energy required to remove?one mole?of electrons from?one mole?of gaseous atoms...
Interpreting Mass Spectra Isotopes are different atoms of the same element that contain the same number of protons and electrons but a different number of neutrons These are atoms of the sam...
Isotopic & Atomic Mass The relative mass of an atom uses the carbon-12 isotope as the international standard One atom of carbon-12 has an accepted mass of 1.992646538 x 10-26?kg It is not reali...
Atomic Structure Calculations An atom is?neutral?and has no overall charge Ions on the other hand are formed when atoms either?gain?or?lose?electrons, causing them to become?charged The numb...
Structure of the Atom All matter is composed of?atoms, which are the smallest parts of an element that can take place in?chemical reactions Atoms are mostly made up of?empty?space?around a v...
目前，中國地區(qū)包括外籍人員子女學(xué)校和公立學(xué)校國際部（班）、民辦國際學(xué)校在內(nèi)的國際學(xué)校主要提供幾大主流課程。其中包括：A-Level、IB、AP，以及中美、中加和其他國家的國際課程。 而據(jù)一項針對國際學(xué)校開設(shè)相...
