Question

Which one has lowest melting point ..Nacl mgcl2 alcl3?

Answer 1

Hi there ,

☆ The lowest melting point is AlCl3

◇ Because its have lowest difference in the electronegativity so, the compound cosidered as covalent

● Al electronegativity value is 1.61

● Cl electronegativity value is 3.16

☆ So the difference = 3.16-1.61= 1.56

◇ Polar covalent compound when difference is from 0.5 to 1.9

◇ Ionic compound when difference is more than 1.9

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