Q.

Amongst LiCl, RbCl, BeCl2, MgCl2, the compounds with greatest and least ionic character respectively are :  

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a

 LiCl and RbCI

b

RbCl and BeCl2

c

 RbCl and MgCI2 

d

MgCI2 andBeCl2

answer is B.

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Detailed Solution

  • As the size of the cation increases, ionic character increases. 
  • So, among the given chlorides, the Rb is having larger size and the element having least size is Be. 
  • So, the compound having more ionic character is RbCl.
  • The compound having more ionic character is BeCl2​.
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Amongst LiCl, RbCl, BeCl2, MgCl2, the compounds with greatest and least ionic character respectively are :