If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone…
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Question “If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone…”
If the symbol X represents a central atom, Y represents outer
atoms, and Z represents lone pairs on the
central atom, the structure Y—X—Y (2 lone pairs around
X)
could be abbreviated as XY2Z2.
Classify these structures according to their shape.
Molecular
Geometries:
linear
bent 120
bent 109
trigonal pyramidal
T-shaped
see saw
square planar
square pyramidal
Possiblities:
XY4Z2
XY5Z
XY2Z
XY2Z3
XY4Z
XY2Z2
XY3Z2
XY3Z
Answer
Based on the number and location of lone pairs on the central atom, the Valence shell electron pair repel model predicts the shape of molecules and of ions.
These are the main postulates of VSEPR Model:
(i) The electron-eletron repulsions in the valence layer of the central atom determine the shape of the molecule.
(iii) The repulsive interaction between electron pairs is in the following order.
These are the numbers of other atoms, and the number lone pairs electrons in each possibility:
These are the geometries for the molecules:
Ans:
These are the geometries for the molecules:
Conclusion
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