Question on: JAMB Chemistry - 2019
The two ions responsible for hardness in water are
A
Ca\(^{2+}\) and / or Mg\(^{2+}\)
B
K\(^+\) and / or Mg\(^{2+}\)
C
Ca\(^{2+}\) and / or Li\(^+\)
D
Ca\(^{2+}\) and / or Na\(^+\)
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Correct Option: A
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