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Chem 115 Exam 3 Questions and Answers
(100% Correct Answers) Already Graded A+
covalent bond Ans: can be formed when the orbitals of two atoms
overlap and are filled with pairs of electrons
greater orbital overlap Ans: stronger and more stable bond
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linear Ans: two electron groups (linear) 180 degrees
trigonal planar Ans: three electron groups (trigonal planar or bent) 120
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degrees
tetrahedral Ans: four electron groups (tetrahedral, trigonal pyramidal, or
bent) 109.5 degrees
trigonal bipyramidal Ans: five electron groups (trigonal bipyramidal,
seesaw, t-shaped, or linear)
octahedral Ans: six electron groups (octahedral, square pyramidal,
square planar)
double bonds Ans: require one p orbital from each atom
triple bonds Ans: require two p orbitals from each atom
hybridization Ans: can be determined directly from VSEPR theory
(number of electron groups)
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two electron groups Ans: sp hybridization
three electron groups Ans: sp2 hybridization
four electron groups Ans: sp3 hybridization
hybrid orbitals Ans: form when atomic orbitals in the valence shell of a
central atom combine, determined by the number of electrons in the
valence shell
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multiple bonds Ans: use electrons in p orbitals to form pi bonds which
reduces the hybridization of the sigma bond
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alkanes Ans: a hydrocarbon containing only single covalent bonds
gas Ans: 1-4 carbons
liquid Ans: 5-12 carbons
oil Ans: 14-20 carbons
solid Ans: >20 carbons
isomer Ans: same molecular formula, different bond structure
naming organic molecules Ans: molecules with the same number of
carbon atoms in a chain share the same parent name
meth- Ans: 1 carbon
1
Chem 115 Exam 3 Questions and Answers
(100% Correct Answers) Already Graded A+
covalent bond Ans: can be formed when the orbitals of two atoms
overlap and are filled with pairs of electrons
greater orbital overlap Ans: stronger and more stable bond
© 2026 Assignment Expert
linear Ans: two electron groups (linear) 180 degrees
trigonal planar Ans: three electron groups (trigonal planar or bent) 120
Guru01 - Stuvia
degrees
tetrahedral Ans: four electron groups (tetrahedral, trigonal pyramidal, or
bent) 109.5 degrees
trigonal bipyramidal Ans: five electron groups (trigonal bipyramidal,
seesaw, t-shaped, or linear)
octahedral Ans: six electron groups (octahedral, square pyramidal,
square planar)
double bonds Ans: require one p orbital from each atom
triple bonds Ans: require two p orbitals from each atom
hybridization Ans: can be determined directly from VSEPR theory
(number of electron groups)
, For Expert help and assignment handling,
2
two electron groups Ans: sp hybridization
three electron groups Ans: sp2 hybridization
four electron groups Ans: sp3 hybridization
hybrid orbitals Ans: form when atomic orbitals in the valence shell of a
central atom combine, determined by the number of electrons in the
valence shell
© 2026 Assignment Expert
multiple bonds Ans: use electrons in p orbitals to form pi bonds which
reduces the hybridization of the sigma bond
Guru01 - Stuvia
alkanes Ans: a hydrocarbon containing only single covalent bonds
gas Ans: 1-4 carbons
liquid Ans: 5-12 carbons
oil Ans: 14-20 carbons
solid Ans: >20 carbons
isomer Ans: same molecular formula, different bond structure
naming organic molecules Ans: molecules with the same number of
carbon atoms in a chain share the same parent name
meth- Ans: 1 carbon
