TestUstad

I3( Tri-iodine) has shape_________?

Correct answer: B. Linear

  • A. Trigonal bipyramidal
  • B. Linear
  • C. Square bipyramidal
  • D. Both A and C

Explanation

The triiodide ion, I3-, has five electron domains around the central iodine: two bonding pairs and three lone pairs. The three lone pairs occupy equatorial positions in a trigonal-bipyramidal electron arrangement, leaving the two bonds opposite each other, so the molecular shape is linear. The likely wrong choice is trigonal bipyramidal, which describes the electron-domain arrangement rather than the shape of the atoms.

Written and checked by , M.Phil ChemistryLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About VSEPR Theory

Valence shell electron pair repulsion theory predicts molecular shape by arranging bonding pairs and lone pairs around a central atom to minimize repulsion. Questions cover linear, trigonal planar, tetrahedral, trigonal bipyramidal and octahedral electron geometries, bond angles and distortions caused by lone pairs. Electron geometry is not always the same as molecular shape.

Practise Chemical Bonding

964 free Chemical Bonding MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Chemical Bonding testAll Chemical Bonding MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Chemistry questions like this

Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Chemistry Test Chemistry80 MCQsSubject Specialist Chemistry Test Chemistry80 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQsBSN Entry Test Chemistry25 MCQs

More VSEPR Theory questions

Molecules having one lone pair and three bond pairs have geometrical shape

Which species is linear?

The number of lone pairs on the central atom in a water molecule is

The number of lone pairs in XeOF4 is_________?

According to VESPR Model the geometry of molecule having 5 bond pair in outer most shell will be __________________?

Geometry of molecule will be pyramidal if the outer post shell of the central atom has___________________?