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Grade 11Mechanics

Why the molecular shape of ClF3 is T-Shape,but not triangular planner?See the attachment for full and complete question.

Question image for Why the molecular shape of ClF3 is T-Shape,but no

Varun

6 Years agoGrade 11

2 Answers

Saurabh Koranglekar

6 Years ago

Chlorine trifluoride has 10 electrons around the central chlorine atom. This means there are five electron pairs arranged in a trigonal bipyramidal shape with a 175°F−Cl−Fbond angle. There are two equatorial lone pairs making the final structureT−shaped.

Vikas TU

6 Years ago

To find the shape of the compound its steric number must be calculated as the type of hybridization and shapes depends on it.
The formula used to calculate the steric number is as follows:
Steric number = Number of bond atoms + Number of lone pairs

In , it has three Cl-F covalent bonds. Thus it is confirmed as it has 3 pairs of bond electrons and 2 pairs of lone electrons and together has 5 electron pairs as given in the attachment.
Thus the steric number of is 3+ 2 = 5. As the steric number is 5, the hybridization is .
As the steric number is 5, the compound has trigaonal bipyramidal with two positions occupied by lone pairs. Due to this it has a bent-T shaped structure.

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