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  • Which of the following is liquid at room temprature - Option: 1 </div

Which of the following is liquid at room temprature - 

Option: 1

BF_3


Option: 2

BCl_3


Option: 3

BBr_3


Option: 4

BI_3


Answers (1)

best_answer

As we have learned

Boron Halides -

BF3 and BCl3 are gases, BBr3 is volatile liquid while BI3 is solid.

Reason:-Br_2 and I_2 have larger size compare to F_2 and Cl_2 .Larger the size,greater the area over which intermolecular forces can act.So,Br_2 and I_2 experience greater force thus forces holds molecules together.They reqire more energy to overcome this what is available at room temperature.

-

 

Therefore option (3) is correct.

Posted by

himanshu.meshram

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