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What is the bond angle of a trigonal planar molecule, such as boron trifluoride (BF3)? 180° 100° 90° 120° 0°

Rodney Fox

in Chemistry

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Megan Page on June 15, 2018

120. for those that do not have lone pairs in the center, I used this method.. a cycle is 360 degrees.. trigonal planar has three atoms attached to the center. so 360/3= 120When have lone pairs, this does not work because lone pairs causes the angle of descent further. for example, a molecule with two atoms, and lone pairs. the angle to do the math is 360/2= 180, but because the lone pair will be less than 180..


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