Question

In the $A{l}_{2}C{l}_6$ dimer :

• A. all the $Al-Cl$ bonds are equivalent
• B. three $Al-Cl$ bonds are equivalent and three are not
• C. two $Al-Cl$ bonds are equivalent and four are not
• D. four $Al-Cl$ bonds are equivalent and two are not

Answer 1

Answer: (D)

four $Al-Cl$ bonds are equivalent and two are not

Structure of $A{l}_{2}C{l}_6$ is shown in figure. It has four equivalent covalent bonds and two coordinate bonds.