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Atoms and Molecules — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceAtoms and Molecules1 Mark
Question
Write the ions present in:
  1. $Al_2(CO_3)_3$
  2. $AlBr_3$
✓

Answer

  1. $2$ ions of $Al^{3+}$
3 ions of $CO_3^{2-}$
Hence total no. of ions $= 5$​​​​​​​
  1. The ions present in $AlBr_3$​​​​​​​ are aluminum ion ($Al^{3+}$) and bromide ions ($Br^{1-}$​​​​​​​)

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