Concept explainers
Interpretation:
The way by which triangular bipyramidal and square pyramidal molecular geometries differ from each other has to be given.
Concept introduction:
Electron geometry is the shape of a molecule predicted by considering both bond electron pairs and lone pair of electrons.
Molecular geometry is the shape of a molecule predicted by considering only bond pair of electrons
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Chapter 7 Solutions
OWLv2 for Moore/Stanitski's Chemistry: The Molecular Science, 5th Edition, [Instant Access], 1 term (6 months)
- If you have three electron regions around a central atom, how can you have a triangular planar molecule? An angular molecule? What bond angles are predicted in each case?arrow_forwardWhat are the bond angles in SF2 and SO2, respectively?arrow_forwardIn the trigonal bipyramidal arrangement, why does a lone pair occupy an equatorial position rather than an axial position?arrow_forward
- The following geometries are possible for a molecule with three atoms bonded to a central atom. II II Assuming the bonded atoms are halogens, determine the central atom for each of these molecular geometries choosing from one of the following atoms. Be, Al, Br, or As,arrow_forwardThe molecules SiF4, SF4, and XeF4 have molecular formulas of the type AF4, but the molecules have different molecular geometries. Predict the shape of each molecule, and explain why the shapes differ.arrow_forwardDraw the Lewis structure of hydrogen cyanide, (HCN) and then choose the appropriate pair of molecular geometries of the two central atoms. Your answer choice is independent of the orientation of your drawn structure.arrow_forward
- Arrange the following compounds in order of increasing bond angle. Explain H2S, CCl4, NF3arrow_forwardFor which of the following molecules will the charge cloud geometry be the same as the molecular shape? H2O XeF4 O3 SiF4 PF3arrow_forwardWhich of the following molecules do not exist under the molecular orbital theory? These are substances with no bond order. O Al, 2+ O P2 Be2 S2 O Cl,2- O F21- O C22+ O N2arrow_forward
- Use VSEPR theory to predict the geometry (including bond angles) about each interior atom of methyl azide (CH3N3), and make a sketch of the molecule. Would you expect the bond angle between the two interior nitrogen atoms to be the same or different? Would you expect the two nitrogen–nitrogen bond lengths to be the same or different?arrow_forwardThe concept of valence-shell electron-pair repulsion (VSEPR) is presented in introductory organic chemistry as a way to predict molecular geometries. The idea be- hind VSEPR is that areas of electron density repel each other so that the geometry of bonds and/or lone pairs of electrons around any one atom places these areas as far apart as possible. For four areas of electron density, a tetrahedral geometry is predicted. For three areas of electron density, a trigonal planar geometry is predicted. Two areas of electron density lead to a linear geometry. VSEPR is simply a predictive tool, but in some cases, it gives an incorrect prediction. In these instances, additional insights into bonding are necessary, such as resonance. Interestingly, several important situations are critical to biochemistry where VSEPR breaks down. Two examples are shown here. :O: CH3 H,N H3N CH3 H :0: :0: Histidine The circled nitrogen atoms are predicted by VSEPR to be tetrahedral in geometry because each…arrow_forwardMethyl isocyanate, CH3NCO, is used in the manufacture of insecticides, such as carbaryl (Sevin). In the CH3NCO molecule, the three H atoms and the O atoms are terminal atoms and the two C and one N atom are the central atoms. Draw the Lewis structure of this molecule, then predict the molecular geometry and indicate the various bond angles.arrow_forward
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