The modern Periodic Table is arranged in order of [ ].
increasing neutron number
increasing proton number
increasing mass number
decreasing proton number
Flashcards for CIE IGCSE Chemistry Arrangement of elements, covering the key terms, formulae and methods you need to recall for Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended), plus Paper 5 or Paper 6. 24 cards, matched to the CIE IGCSE Chemistry (0620) specification.