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Sagot :
- Two hydroxide ions means two OH^- ions .
- The valency of reactants must be 2
Only possible with alkaline earth metals
Let's see an example
[tex]\\ \sf\longmapsto X(OH)_2[/tex]
- X belongs to group || i.e alkaline earth metals
The elements are
- Magnesium (Mg)
- Calcium (Ca)
- Beryllium(Be)
- Scandium(Sc)
- Barium (Ba)
- Renedium (Rn)
Option C is correct
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