(b) (i) Metals are generally solid at room temperature. Name the metal which is liquid at room
temperature (say 25° C).
(ii) Which element is the most reactive element of Group 1(IA) elements?

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Solution

(i) Mercury is the metal which is liquid at room temperature.
(ii) Francium is the most reactive element from the Group 1(IA) elements.

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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.

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