NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice
Among LiCl, B e C l 2 , B C l 3 and C C l 4 , the covalent bond character follows the order
Options
- AL i C l < B e C l 2 > B C l 3 > C C l 4
- BL i C l > B e C l 2 < B C l 3 < C C l 4
- CL i C l < B e C l 2 < B C l 3 < C C l 4
- DL i C l > B e C l 2 > B C l 3 > C C l 4
Correct answer
C. L i C l < B e C l 2 < B C l 3 < C C l 4
Step-by-step solution
Electro negativity differences M - C l bond decreases as we move from L i → B e → B → C and therefore, covalent character increase in the order 'C'. Covalent nature ∝ charge on ion. On moving left to right across the period covalent nature increases so the order is L i C l < B e C l 2 < B C l 3 < C C l 4 .