6. a. Give one example each of monovalent , bivalent,
trivalent & tetravalent ions.
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Answer:
Monovalent: K1+ (Potassium)
Divalent:Ca2+ (Calcium)
Trivalent:Al3+ (Aluminium)
Tetravalent:Pb4+ (Lead,Plumbic)
Explanation:
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