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...Flexible learning approach to physics module p the periodic table and chemical bonding opening items introduction valency fast track questions a simple theory of ready study ionic evidence for electron shells in atoms covalent periodicity reactivity extended bond determined by outer electronegativity configuration metallic summary section noble gases halogens alkali metals closing transition elements lanthanides achievements actinides exit test flap copyright open university s v one greatest triumphs western civilization has been detailed understanding that scientists have obtained everyday large scale phenomena terms small behaviour much this based on quantum mechanics developed mid mainly european physicists however applications molecules were ideas had formulated previous century far sighted chemists who understood more quickly than most reality appreciated atomic could be used enable profound properties is devoted achieving an individual how they together form compounds will lead u...