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.
Create a free account to view solution
View Solution FreeMore s-Block Elements Questions
Which of the following is the strongest base ?...Which property of sodium is being used in street lights?...Which of the following compounds on reaction with Na2O2 gives yellow colour compound ?...KO2 (potassium super oxide) is used in oxygen cylinders in space and submarines because it...Which of the following product is obtained as insoluble, when ammonical solution of brine is saturated with carbon dioxi...