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Question
The compound containing a metal - which does not exhibit variable valency.
Options
Al2(SO4)3
Fe2(SO4)3
PbSO4
CuSO4
MCQ
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Solution
Al2(SO4)3
Explanation:
Aluminium (Al) has a single, fixed valency of 3+ and does not vary. Iron (Fe), Lead (Pb), and Copper (Cu) all show variable valencies.
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