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Which one of K, Ca and Mg does not react...

Which one of K, Ca and Mg does not react readily with cold water?

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To determine which of the elements K (potassium), Ca (calcium), and Mg (magnesium) does not react readily with cold water, we can analyze the reactivity of each element based on their positions in the periodic table and their chemical properties. ### Step-by-Step Solution: 1. **Identify the Group of Elements:** - Potassium (K) is an alkali metal, while calcium (Ca) and magnesium (Mg) are alkaline earth metals. 2. **Reactivity of Alkali Metals:** ...
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