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  • Which of the following has least ionisation energy?Option: 1 BOption: 2 Al<di

Which of the following has least ionisation energy?

Option: 1

B


Option: 2

Al


Option: 3

Ga


Option: 4

In


Answers (1)

best_answer

As we learnt

Ionisation Energy of Boron Family -

Does not decreases regularly down the group

- wherein

Discontinuity between Al and Ga, and In and Tl is due to inability of d and f electrons (low screening effect) to compensate the increase in nuclear charge

 

 The atom with greater size has lower ionization energy . So , It has atleast ionization energy as it is biggest among the given options  

Therfore, option (4) is correct.

 

Posted by

himanshu.meshram

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