ZAINORA · Harley Street

The Periodic Table

A complete interactive study platform for Cambridge IGCSE Chemistry (0620) — atomic structure, ions, electron shells, periodic trends, quizzes, flashcards, comparison and reaction simulations. Group numbering and relative atomic masses follow the Cambridge data sheet.

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Relative atomic masses match the 0620 data sheet · groups labelled I–VIII (Group VIII is also called Group 0) · symbol colour: gold = gas, blue = liquid at r.t.p. · trends marked ◆ are enrichment beyond 0620.