Questions
The relative stability of +1 oxidation state of group 13 elements follows the order
detailed solution
Correct option is B
The stability order of +3 and +1 oxidation states of group 13 elements will be :B+3 > Al+3 > Ga+3 > In+3 >> Tl+3 (order of +3 oxidation state)B+<< Al+ < Ga+ < In+ < Tl+ (order of +1 oxidation state)The presence of two oxidation states in p-block elements is due to the inert pair effect. Because of the presence of poor shielding d and f-orbitals, as we move from Ga to Tl, effective nuclear charge of these elements increases so as to hold the valence ns2- electrons tightly. It causes difficulty to the ionisation of ns2 - electrons and it remains inert, only np1 - electrons ionises to give +1 oxidation state.Similar Questions
The bond dissociation energy of BF bond in BF3 is 646 kJ mol–1 whereas that of CF in CF4 is 315 kJ mol–1. The correct reason for higher BF bond dissociation energy as compared to that of CF bond is :
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