Question:

Shapes of certain interhalogen compounds are stated below. Which one of them is not correctly stated?

Show Hint

BrF5 has 5 bond pairs and 1 lone pair (sp3d2), so it is square pyramidal, not trigonal bipyramidal.
Updated On: Nov 11, 2026
  • \(\mathrm{IF_7}\) : pentagonal bipyramid
  • \(\mathrm{BrF_5}\) : trigonal bipyramid
  • \(\mathrm{BrF_3}\) : planar T-shaped
  • \(\mathrm{ICl_3}\) : planar dimeric
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The Correct Option is B

Solution and Explanation

\(\mathrm{IF_7}\): sp3d3, 7 bond pairs, pentagonal bipyramidal - correct.
\(\mathrm{BrF_5}\): 5 bond pairs + 1 lone pair, sp3d2, square pyramidal - the statement 'trigonal bipyramid' is wrong.
\(\mathrm{BrF_3}\): 3 bond pairs + 2 lone pairs, sp3d, planar T-shaped - correct.
\(\mathrm{ICl_3}\): exists as the planar dimer \(\mathrm{I_2Cl_6}\) - correct.
Answer: (2) \(\mathrm{BrF_5}\) : trigonal bipyramid
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