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Q.

Iodiine atom, in the third excited state, reacts with  fluorine to form a compound ‘x’. The formula and shape of ‘x’ are  

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a

IF4 ,tetrahedral

b

IF5 ,pentagonal

c

IF4 , pentagonal bipyramidal

d

IF7 , pentagonal bipyramidal

answer is D.

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Detailed Solution

In third excited state, Iodine has the outermost configuration : ns1np3 nd3 , in its velence shell it has 7 unpaired electrons.

Thus it forms IF7.  Its hybridisation is sp3d3 .Shape is pentagonal bipyramidal.

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Iodiine atom, in the third excited state, reacts with  fluorine to form a compound ‘x’. The formula and shape of ‘x’ are