Group - 13

Sum of first three ionization energy of boron is very high concludes 

boron can't form +3 ions because

Aluminium is higly electropositive and forms +3 ions because of

Compound of +__ O.S is more ionic than +__O.S

Tendency to behave as Lewis Acid_____with increase in Size down the Group

BCl3 accepts L.P from Ammonia to form ______

AlCl3 achieves Stablity by forming a ______

Trichlorides on hydrolysis water form [M(OH)4]- , M--> sp3 its geometry is _______

But ____ in acidified aqueous solution form Octahedral [M(H2O)6]+3 , M--> sp3d2

E* Al+3/Al = -1.66 V and E* Tl+3/Tl = 1.26 V implies that

Answer explanation

Al has high tendency to form Al+3, while Tl+3 is unstable as well as Powerful Oxidising in Agent. So Tl+ is more stable than Tl +3