Electropositive Character

(a) Standard electrode potential value E^@ for Al^(3+)//Al is - 1.66 V and that of Tl^(3+)//Tl is + 1.26 V . Predict about the formation of M^(3+) ion in solution and compare the electropositive character of the two metals. (b) White fumes appear around the bottle of anhydrous aluminium chloride. Give reason. ( c) Boron is unable to form BF_(6)^(3-) ion. Explain.

Most electropositive halogen atom is ……………

Sodium is ____________ electropositive than potassium.

Reaction With Strongly Electropositive Metals