Final Exam Practice Problems CHEM 101
UNC
Electron energy levels have _________________ (same/different) potential energy
values in different atoms. - Correct answer-different
electrons _________________ (can/cannot) exist in and transition between all possible
energy states around a given atom at the same time - Correct answer-can
In which type of atom would you find the smallest 3s subshell? - Correct answer-You
would need to look for the biggest atom because this means each subshell is smaller
due to increased electron-electron repulsion
How do you find the ion with the greatest concentration? - Correct answer-you need to
look for the one with the heaviest mass/ largest molecular weight
Pi bonds are orriented in such a way that they are
__________________(parallel/perpendicular) to each other - Correct answer-
perpendicular
An atom making a double bond most likely has at least ___________ unhybridized p
orbital(s). - Correct answer-one
An atom pair ____________(can/cannot) make more than one sigma bond because of
Pauli Exclusion Principle. - Correct answer-cannot
Name three examples of state functions: - Correct answer-altitude, enthalpy change,
and temperature change
Electrons are _______________(closer/farther away) to nuclei in a sigma bond than a
pi bond - Correct answer-closer
sigma bonds are _____________________(lower/higher) in energy than pi bonds -
Correct answer-lower
electrons in antibonding orbitals_______________________(stabalize/destabilize)
bonds by pulling nuclei away from the internuclear space. - Correct answer-destabilize
Shape of a dz2 orbital - Correct answer-dumbell with a donut around the middle
When looking for an atom that would require the most energy to remove the 1s orbital
what should you look for and why? - Correct answer-you should look for the element
UNC
Electron energy levels have _________________ (same/different) potential energy
values in different atoms. - Correct answer-different
electrons _________________ (can/cannot) exist in and transition between all possible
energy states around a given atom at the same time - Correct answer-can
In which type of atom would you find the smallest 3s subshell? - Correct answer-You
would need to look for the biggest atom because this means each subshell is smaller
due to increased electron-electron repulsion
How do you find the ion with the greatest concentration? - Correct answer-you need to
look for the one with the heaviest mass/ largest molecular weight
Pi bonds are orriented in such a way that they are
__________________(parallel/perpendicular) to each other - Correct answer-
perpendicular
An atom making a double bond most likely has at least ___________ unhybridized p
orbital(s). - Correct answer-one
An atom pair ____________(can/cannot) make more than one sigma bond because of
Pauli Exclusion Principle. - Correct answer-cannot
Name three examples of state functions: - Correct answer-altitude, enthalpy change,
and temperature change
Electrons are _______________(closer/farther away) to nuclei in a sigma bond than a
pi bond - Correct answer-closer
sigma bonds are _____________________(lower/higher) in energy than pi bonds -
Correct answer-lower
electrons in antibonding orbitals_______________________(stabalize/destabilize)
bonds by pulling nuclei away from the internuclear space. - Correct answer-destabilize
Shape of a dz2 orbital - Correct answer-dumbell with a donut around the middle
When looking for an atom that would require the most energy to remove the 1s orbital
what should you look for and why? - Correct answer-you should look for the element
