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Symbols, Valency, Radicals and Formulae — Part 1: Symbols, valency and radicals

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Lesson

The shorthand of chemistry

Part 1 — every element has a symbol, every symbol has a combining power, and groups of atoms can behave like one unit.

In this lesson you will

  • Write the symbols of common elements, including those taken from Latin names, and say what a symbol stands for
  • Deduce the valency of an element from its hydride or from its valence electrons
  • Name common acid and basic radicals, state their valencies and tell simple radicals from compound radicals