VSEPR shape of BCl3

How to find the shape of boron trichloride using VSEPR theory?

Step 1: Use lewis structure guidelines to draw the lewis structure of BCl3.
BCl3 lewis structure

Step2: Apply VSEPR notation, A X E
A=Number of central atoms
X=Number of surrounding atoms
E= Number of lone pairs on central atom

For the above molecule VSEPR notation will be AX3E0

Step 3: Use VSEPR table to find the shape. AX3 has trigonal planar shape. So the shape of BCl3 molecule is trigonal planar.
Download a copy of VSEPR shapes table here

Bond angle in BCl3

Bond angle of Cl-B-Cl covalent bond in BCl3 molecule is 120º.The representation is shown below.
trigonal planar shape
Image courtesy:wikipedia.org

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