The two metal ions that cause hardness to water are: Options: A . &nbspCalcium, Magnesium B . &nbspSodium, Calcium C . &nbspSodium, Potassium D . &nbspSodium, Magnesium

The two metal ions that cause hardness to water are:

Question

The two metal ions that cause hardness to water are:

Options:

A . Calcium, Magnesium

B . Sodium, Calcium

C . Sodium, Potassium

D . Sodium, Magnesium

Answer: Option A

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