The molecular geometry of a molecule describes the 3-dimensionalshape of just th
ID: 681551 • Letter: T
Question
The molecular geometry of a molecule describes the 3-dimensionalshape of just the atoms. This is in contrast to the electronicgeometry, which describes the shape of all regions of high electrondensity. The number of regions of high electron density, orsteric number, determines the shape of the molecule.What is the molecular geometry of a moleculewith 4 outer atoms and 1 lone pair on the central atom?
Part B What is the molecular geometry of a moleculewith 2 outer atoms and 2 lone pairs on the central atom?
Part C What is the molecular geometry of a moleculewith 4 outer atoms and 2 lone pairs on the central atom?
What is the molecular geometry of a moleculewith 4 outer atoms and 1 lone pair on the central atom?
Part B What is the molecular geometry of a moleculewith 2 outer atoms and 2 lone pairs on the central atom?
Part C What is the molecular geometry of a moleculewith 4 outer atoms and 2 lone pairs on the central atom?
Explanation / Answer
Number ofbonding groups Electron group arrangements 2 Linear 3 Trigonal Planar 4 Tetrahedral 5 Trigonal Bipyramidal 6 Octahedral However, for the molecular geometry: AXmEn, where A=centralatom, Xm=surrounding atom, En=non-bondingvalence electron groups AX2E/AX2E2: bent (or angular) AX3E: trigonal pyramidal AX4E: seesaw AX3E2: T-shaped AX2E3: linear AX5E: square pyramidal AX4E2: square planar A) 4 outer atoms & 1 lone pair = AX4E = seesaw B) 2 outer atoms & 2 lone pairs = AX2E2 =bent/angular C) 4 outer atoms & 2 lone pairs = AX4E2 =square planar Hope this helps! :)
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