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Question
Identify the elements with the following property and arrange them in increasing order of their reactivity
- An element which is a soft and reactive metal
- The metal which is an important constituent of limestone
- The metal which exists in liquid state at room temperature
Solution
- An element which is a soft and reactive metal is sodium.
- The metal which is an important constituent of limestone is calcium.
- The metal which exists in the liquid state at room temperature is mercury.
The arrangement of these elements in increasing order of their reactivity would be mercury (Hg) < calcium (Ca) < sodium (Na).
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