Electrons, Bonds And Molecular Properties Worksheet With Answer Key
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15Chapter 1
Electrons, Bonds and Molecular Properties
Review of Concepts
Fill in the blanks below. To verify that your answers are correct, look in your textbook at
the end of Chapter 1. Each of the sentences below appears verbatim in the section
entitled Review of Concepts and Vocabulary.
• _____________ isomers share the same molecular formula but have different
connectivity of atoms and different physical properties.
• Second-row elements generally obey the _______ rule, bonding to achieve noble
gas electron configuration.
• A pair of unshared electrons is called a ______________.
• A formal charge occurs when an atom does not exhibit the appropriate number
of ___________________________.
• An atomic orbital is a region of space associated with ____________________,
while a molecular orbital is a region of space associated with _______________.
• Methane’s tetrahedral geometry can be explained using four degenerate _____-
hybridized orbitals to achieve its four single bonds.
• Ethylene’s planar geometry can be explained using three degenerate _____-
hybridized orbitals.
• Acetylene’s linear geometry is achieved via _____-hybridized carbon atoms.
• The geometry of small compounds can be predicted using valence shell electron
pair repulsion (VSEPR) theory, which focuses on the number of _______ bonds
and _______________ exhibited by each atom.
• The physical properties of compounds are determined by __________________
forces, the attractive forces between molecules.
• London dispersion forces result from the interaction between transient
__________________ and are stronger for larger alkanes due to their larger
surface area and ability to accommodate more interactions.
Review of Skills
Fill in the blanks and empty boxes below. To verify that your answers are correct, look
in your textbook at the end of Chapter 1. The answers appear in the section entitled
SkillBuilder Review.
SkillBuilder 1.1 Determining the Constitution of Small Molecules
STEP 1 - DETERMINE THE VALENCY (NUMBER OF EXPECTED
STEP 2 - DRAW THE STRUCTURE OF C
H
Cl BY PLACING
2
5
BONDS) FOR EACH ATOM IN C
H
Cl
ATOMS WITH THE HIGHEST VALENCY AT THE CENTER,
2
5
AND PLACING MONOVALENT ATOMS AT THE PERIPHERY
Each carbon atom is expected to form ___ bonds.
Each hydrogen atom is expected to form ___ bonds.
The chlorine atom is expected to form ___ bonds.
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