Concept explainers
(a)
Interpretation:
The electron-pair geometry for the nitrogen atom in
Concept introduction:
The electron pairs in Lewis diagrams repel each other in real molecule and thus, they distribute themselves in positions around the central atoms which are far away from one another. This arrangement of electron pairs is called electron-pair geometry. The electron pairs may be shared in covalent bond, or they may be lone pairs.
(b)
Interpretation:
The molecular geometry prdicted by the valence shell electron-pair repulsion theory for the nitrogen atom in the molecule
Concept introduction:
Molecular geometry is the precise term that is used to describe the shape of molecules and arrangement of atoms around the central atom. The molecular geometry of a molecule is predicted by valence shell electron-pair repulsion theory or in short VSEPR theory. VSEPR theory applies to substances in which a second period element is bonded to two, three, four, or other atoms.
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Introductory Chemistry: An Active Learning Approach
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- Determine the molecular geometry and polarity (polar or nonpolar) for carbon tetrafluoride. Fill in the boxes below.Molecular geometry: polarity:arrow_forwardUse the Molecule Shape simulator (http://openstaxcollege.org/l/16MolecShape) to build amolecule. Starting with the central atom, click on the double bond to add one double bond. Then add one single bond and one lone pair. Rotate the molecule to observe the complete geometry. Name the electron group geometry and molecular structure and predict the bond angle. Then click the check boxes at the bottom and right of the simulator to check your answers.arrow_forwardFor the polyatomic ion NO3-, answer the following: (a) total number of valence electrons in the ion (enter a number only) (b) identity of the central atom (element symbol) Now draw the Lewis Structure and answer the following questions: (c) number of electron groups on the central atom (enter a number only) (d) number of bonding groups on the central atom (enter a number only) (e) number of double bonds in the ion (enter a number only) (f) number of single bonds in the ionarrow_forward
- Complete Table 3 (Remember that the values pertain to the Central atoms only. In this table, you will have more than one central atom so report more than one value, ie. 3 / 3) Table 3 Molecules with Multiple Central Atoms Molecule C2H4 H2O2. CH3OH. CH3NH2 Number of Bond Pairs / / / / Number of Lone Pairs / / / / Number of Electron Domains / / / / Molecular Geometry (Shape) / / / / Bond Angle / / / / Polar or Non-Polar Nonpolar Polar Polar Polararrow_forwardWhich statement about VSEPR theory is not correct? Select one: a. The molecular shape or geometry is determined by the positions of the lone pairs in the molecule. b. The steric number has five values from 2 to 6. c. The steric number of a central atom is the sum of the number of bonds around the atom plus the number of electrons in lone pairs pairs d. The electron-pair geometry is determined by the positions of the bonds and lone pairs in a molecule. e. In VSEPR theory, the shape or geometry of a molecule is determined by electron-electron repulsion.arrow_forwardPolar and nonpolar molecules contain polar bonds. True or false?arrow_forward
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