JIPMER2007Chemistrys Block Elements
The correct sequence of increasing covalent character is represented by
Options
- ALiCl NaCl BeCl ₂
- BBeCl ₂ NaCl LiCl
- CNaCl LiCl BeCl ₂
- DBeCl ₂ LiCl NaCl
Correct answer
C. NaCl LiCl BeCl ₂
Step-by-step solution
On the basis of Fajan's rule, lower the size of cation higher will be its polarising power and higher will be covalent character. Polarising power 1 size of cation Covalent character Polarising power So the correct order is NaCl LiCl BeCl ₂ (The order of size of cation Na ⁺ Li ⁺ Be ²⁺ )