Textbook Question
Determine the molecular geometry and sketch each molecule or ion, using the bond conventions shown in “Representing Molecular Geometries on Paper” in Section 11.4. d. IF2–
Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory
All textbooks
Tro 6th EditionCh.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO TheoryProblem 42b
Tro 6th EditionCh.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO TheoryProblem 42bChapter 11, Problem 42b
Determine the molecular geometry about each interior atom and sketch each molecule. b. N2H2 (skeletal structure HNNH)
Verified step by step guidance1
Determine the total number of valence electrons in the molecule. Nitrogen (N) has 5 valence electrons and hydrogen (H) has 1 valence electron. Calculate the total for N2H2.
Draw the Lewis structure for N2H2. Start by connecting the atoms with single bonds according to the skeletal structure HNNH.
Complete the octets for the nitrogen atoms by adding lone pairs of electrons, ensuring that the total number of valence electrons is used.
Determine the molecular geometry around each nitrogen atom. Consider the electron groups (bonds and lone pairs) around each nitrogen atom to predict the geometry using VSEPR theory.
Sketch the molecule based on the determined geometry, showing the arrangement of atoms and lone pairs around each nitrogen atom.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
1mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
VSEPR Theory
Valence Shell Electron Pair Repulsion (VSEPR) Theory is a model used to predict the geometry of individual molecules based on the repulsion between electron pairs in the valence shell of the central atom. According to this theory, electron pairs will arrange themselves as far apart as possible to minimize repulsion, leading to specific molecular shapes.
Recommended video:
Guided course
02:13
Molecular Shapes and VSEPR
Molecular Geometry
Molecular geometry refers to the three-dimensional arrangement of atoms within a molecule. It is determined by the number of bonding pairs and lone pairs of electrons around the central atom, which influences the angles between bonds and the overall shape of the molecule, such as linear, bent, or tetrahedral.
Recommended video:
Guided course
01:33Molecular Geometry with Two Electron Groups
Lewis Structures
Lewis structures are diagrams that represent the bonding between atoms in a molecule and the lone pairs of electrons that may exist. They provide a visual representation of the arrangement of electrons, helping to predict molecular geometry and the connectivity of atoms, which is essential for understanding the structure of compounds like N2H2.
Recommended video:
Guided course
04:28Lewis Dot Structures: Ions
Related Practice
Textbook Question
Determine the molecular geometry about each interior atom and draw each molecule. (Skeletal structure is indicated in parentheses.)
a. C2H2 (skeletal structure HCCH)
b. C2H4 (skeletal structure H2CCH2)
c. C2H6 (skeletal structure H3CCH3)
Textbook Question
Determine the molecular geometry about each interior atom and sketch each molecule. a. N2
Textbook Question
Determine the molecular geometry about each interior atom and sketch each molecule. c. N2H4 (skeletal structure H2NNH2)
Textbook Question
Each ball-and-stick model shows the electron and molecular geometry of a generic molecule. Explain what is wrong with each molecular geometry and provide the correct molecular geometry, given the number of lone pairs and bonding groups on the central atom. (c)
Textbook Question
Determine the geometry about each interior atom in each molecule and sketch the molecule. (Skeletal structure is indicated in parentheses.) a. CH3OH (H3COH) b. CH3OCH3 (H3COCH3)