Two molecules have the same molecular geometry but different electron domain geometries. Which combination of atoms and lone pai
rs around the central atom could describe these molecules?
2 atoms and 2 lone pairs; 3 atoms and 0 lone pairs
1 atom and 3 lone pairs; 2 atoms and 1 lone pair
3 atoms and 1 lone pair; 3 atoms and 0 lone pairs
2 atoms and 2 lone pairs; 2 atoms and 1 lone pair
2 atoms and 2 lone pairs; 3 atoms and 0 lone pairs
1 atom and 3 lone pairs; 2 atoms and 1 lone pair
3 atoms and 1 lone pair; 3 atoms and 0 lone pairs
2 atoms and 2 lone pairs; 2 atoms and 1 lone pair
2 answers:
Answer : The correct option is, 2 atoms and 2 lone pairs; 2 atoms and 1 lone pair
Explanation :
In type , when bond pair of electrons is 2 and lone pair of electrons is 1 then the electron domain geometry is Trigonal planar and molecular geometry is Bent.
In type , when bond pair of electrons is 2 and lone pair of electrons is 2 then the electron domain geometry is Tetrahedral and molecular geometry is Bent.
Hence, a molecule having 2 atoms and 2 lone pair have the same molecular geometry as that of the molecule having 2 atoms and 1 lone pair.
The table is shown below.
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