Which of the following alkali metals has the least melting point?

(a) Na  

(b) K  

(c) Rb  

(d) Cs

Asked by Pragya Singh | 1 year ago |  140

1 Answer

Solution :-

Right answer is  (d) Cs

Cs has the least melting point of the given alkali metals since it has the largest size. Due to a larger size, the binding capability of Cs is limited and the lattice energy released during the formation of its compounds is less and can be easily broken.

Answered by Abhisek | 1 year ago

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