Question

For the ion M³⁺ the ionic radius is 0.2 Å. The nature of MCl₃ is-

• A. Good conductor of electricity in anhydrous state
• B. Bad conductor of electricity in anhydrous state
• C. Covalent chlorides
• D. Both (2) & (3) are correct

Answer 1

Answer: (D)

Both (2) & (3) are correct

Answer 2

$\sqrt{\varphi_{M^{3 +}}}$= $\sqrt{\frac{3}{0.2}}$ = 3.87 > 2.2

Therefore MCl₃ is bad conductor of electricity and covalent chlorides.