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anonymous174
01.01.2021 •
Chemistry
Determine the electron geometry, molecular geometry, and idealized bond angles for each of the following molecules.
a. CF4
b. NF3
c. OF2
d. H2S
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Ответ:
CF4- electron geometry- tetrahedral
Molecular geometry- tetrahedral
bond angle- 109 degrees
NF3- electron geometry- tetrahedral
Molecular geometry- trigonal planar
bond angle - less than 109 degrees
OF2 - electron geometry- tetrahedral
Molecular geometry- bent
bond angle- less than 109 degrees
H2S- electron geometry- tetrahedral
Molecular geometry- bent
less than 109 degrees
Explanation:
All the compounds mentioned here are based on a tetrahedron according to VSEPR theory. There are four regions of electron density in each molecule.
However, the presence of lone pairs causes a distortion away from the expected tetrahedral geometry predicted by VSEPR theory.
Hence the presence of one or more lone pairs on the valence shell of the central atom causes distortion from the expected geometry.
Ответ:
true
Explanation:
Because Mercury can be solidified when its temparature us brought to its freezing point. However, when returned to room temparature conditions, mercury does not exist in solid state for long, and returns back to its more common liquid form.