What is the electron geometry (or electron arrangement) around an atom in a molecule or ion which is surrounded by one lone pair

Question

4 years ago

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What is the electron geometry (or electron arrangement) around an atom in a molecule or ion which is surrounded by one lone pair

of electrons and four single bonds.
a. trigonal bipyramidal
b. see-saw or distorted tetrahedron
c. t-shaped
d. linear
e. trigonal planar ans: a dif: easy?

Chemistry

1 answer:

Dmitriy789 [7] · Answer 1 · 2021-11-24T08:05:03+03:00

In this case, you have five electron domains around the central atom(1 pair and 4 bonds). This means that the general shape is going to be a trigonal planar with a line going through the middle. This would normally form a trigonal bipyrimid. But, one of these domains is a lone pair, so remove a bond from the trigonal plane. This gives you a "V" shape with a line going through the vertex, making a see-saw shape.