s-Block ElementsHard
Question
Which of the following has lowest melting point?
Options
A.Li
B.Na
C.K
D.Cs
Solution
The metallic bond is purely the electric attraction between the mobile electrons and positive part of the atom, the kernel. This electrical attraction depends upon the (i) number of mobile electrons per atom and (ii) the size of the atom.The strength of metallic bond is weakest in Cs metallic lattice amongst these elements because of largest atomic radius.
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