Question

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

Answer 1

(a) The metal may be either Na or K. (b) The metal is Ca. (c) The metal is Hg.
The increasing order of reactivity of the metals is :
`HgltCaltNaltK.`