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Atoms and Molecules — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceAtoms and Molecules2 Marks
Question
Name any two monovalent cations, divalent cations and trivalent cations. Also name any one compound each one of them make.
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Answer

$\mathrm{Na}^{+}, \mathrm{K}^{+} \mathrm{NaCl}, \mathrm{KCl} \mathrm{~Ca}^{2+}, \mathrm{Mg}^{2+} \mathrm{CaCl}_2, \mathrm{MgF}_2 \mathrm{Al}^{3+}, \mathrm{Fe}^{3+} \mathrm{AlCl}_3, \mathrm{Fe}_2 \mathrm{O}_3$

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