Chemistry Practice Problems Bond Angles Practice Problems Solution: Which of the following triatomic ions would you ex...

Solution: Which of the following triatomic ions would you expect to be linear and which would you expect to be V shaped? For those V shaped, suggest approximate bond angles. (a) BrF2+ ; (b) BrF2- ; (c) CN22-.

Problem

Which of the following triatomic ions would you expect to be linear and which would you expect to be V shaped? For those V shaped, suggest approximate bond angles. 

(a) BrF2+

(b) BrF2-

(c) CN22-.

Solution

We are being asked about the molecular geometry of the given compounds, particularly if any of them are linear and/or V-shaped. We are also asked to suggest an approximation of the bond angle for the V-shaped molecule. Aside from these shapes, other possible molecular shapes are:



To do so, we first need to draw a Lewis structure


For this, we need to do the following steps:

Step 1: Determine the central atom in this molecule.

Step 2: Calculate the total number of valence electrons present.

Step 3: Draw the Lewis structure for the molecule.

Step 4: Determine the shape of the molecule.


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