Identify the elements with the following property and arrange them in

1.	Identify the elements with the following property and arrange them in increasing order of their reactivity. (i) An element which is a soft and reactive metal. (ii) The metal which is an important constituent of limestone. (iii) The metal which exists in liquid state at room temperature.
Answer» (i) Na or K (ii) Ca (iii) Hg Reactivity order: Hg < Ca < Na < K

Identify the elements with the following property and arrange them in increasing order of their reactivity. (i) An element which is a soft and reactive metal. (ii) The metal which is an important constituent of limestone. (iii) The metal which exists in liquid state at room temperature.

Answer»

(i) Na or K

(ii) Ca

(iii) Hg

Reactivity order: Hg < Ca < Na < K

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Identify the elements with the following property and arrange them in increasing order of their reactivity. (i) An element which is a soft and reactive metal. (ii) The metal which is an important constituent of limestone. (iii) The metal which exists in liquid state at room temperature.

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