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Remembering Molecular Geometric Shapes

Posted: Fri Nov 15, 2019 12:14 am
by MaryBanh_2K
Is there a conceptual way of how you can determine the molecular geometric shape of a molecule or do we just have to memorize the amount of bonding and lone pairs of different molecular geometric shapes and assign the shape that way?

Re: Remembering Molecular Geometric Shapes

Posted: Fri Nov 15, 2019 12:58 am
by Jedrick Zablan 3L
You could examine the amount of lone pairs would impact electron repulsion in turn impacting the shape.

Re: Remembering Molecular Geometric Shapes

Posted: Fri Nov 15, 2019 1:09 am
by Shail Avasthi 2C
Image

You could memorize, the 5 "parent" shapes (linear, trigonal pyramidal, tetrahedral, trigonal bipyramidal, octahedral), and then intuitively reason where the lone pairs would go in each arrangement, which will lead you to the final molecular shape.