Determine the bond angles for each molecule in.(a) SiO2(b) BF3(c) CFCl3 (carbon is

Step 1 of 4

Here, we are going to find out the bond angles for each molecule.The bond angles can be calculated by using VSEPR theory. The repulsion between the electron groups of the internal atom determines the geometry of the molecule. The best possible geometry of the molecule is that where electron groups have maximum separation between them.

(a) 

The valence electron of Si = 4

Valence electron of O atom = 6

Total valence electrons in  molecule = 4 + 2 x 6 = 16 e

The Lewis structure of  is

From Lewis structure, it is found that SiO2 has two electron groups. Therefore, two bonds repel each other, gives a linear geometry.

Thus, the bond angle of  is 180°.

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