identify the element with the following property an arrange them in the increasing order of the reactivity.
A) an element which is soft and reactive metal
B) the metal which exist in liquid state at room temperature.
C) the metal which is an important consituent of limestone

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Solution

A) Sodium is a soft and reactive metal.
B) A metal which exist as liquid at room temperature = Mercury
C) Metal which is important constituent of limestone = Calcium

Increasing order of reactivity :
Mercury < Calcium < Sodium

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Question 40
Identify the elements with the following property and arrange them in increasing order of their reactivity:

(a) An element which is a soft and a reactive metal.

(b) The metal which is an important constituent of limestone.

A reaction in which a more reactive metal replaces a less reactive metal from its salt solution is called a/an ________ reaction.

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