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Grade 12th passDiscuss with colleagues and IITians

shape of the molecule [IF6]- ionis destoid octahedral according to NCERT XII without reason,why it is not pentagonal pyramidal shape,while angle 72* is less then 90*?(*=degree)

Profile image of Umesh Jakhar
14 Years agoGrade 12th pass
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1 Answer

Profile image of Pooja
7 Years ago
Dear Student,
The shape of a molecule is attained by keeping in track of lp-lp , lp-bp and bp-bp repulsions (VSEPR theory)
I has 8electons in IF6- molecule
If shape is pentagonal pyramidal angle is 72* which is low than the angle in distorted octahedral. Therefore to minimise the repulsions such shape is attained.

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