Chemistry 5070 · O Level · Formulae

Formulae — practice question

A section of the Periodic Table is shown containing four elements, W, X, Y and Z. These are not the elements’ true symbols. Some of these pairs of elements may react to produce compounds. Which formulae are correct?

  • AWX and YZ
  • BWY$_2$ and WZ
  • CWZ and XZ
  • DX$_2$Z$_3$ and YZ

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