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Atoms and Molecules — Science STD 9 — Question

CBSE 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

Na+, K+
NaCl, KCl
Ca2+, Mg2+
CaCl2, MgF2
Al3+, Fe3+
AlCl3, Fe2O3

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