10. Periodic Properties of the Elements
The Electron Configuration: Condensed
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Which electron configuration violates the Pauli exclusion principle?
A
B
C
![Orbital diagram showing a series of boxes, a single box, a single box, and a set of thee boxes, left to right representing the 1s, 2s, and 2p orbitals, respectively. The 1s box contains two arrows, one pointing up and one down. The 2s box contains one arrow one pointing up. The first box in the 2p set contains a single arrow pointing up. The second 2p box contains two arrows, one pointing up and one down. The third box is empty." ></div></span></div></div></div><div class="vvH7Vk"></div></div></div><div class="_0pTO6E" id=":R236mf9d8kl6:-identifiable-owned-idref" role="radio" aria-disabled="false" aria-checked="false" data-a11y-radio="" tabindex="-1" data-a11y-idref=":R236mf9d8kl6:-identifiable-owned-idref"><div class="eoA2bz TBT9Um"><div id="" class="JhDr6W"><div class="Q_JqoM"><div class="_78Qku4">D</div></div><div><div style="display:contents" data-a11y-id="a11y-math-hack"><span style="display:block"><div class="UHp9VN" id=""><img src= "tro_pq_c9q2d.jpg" alt= "Orbital diagram showing a series of boxes, a single box, a single box, and a set of thee boxes, left to right representing the 1s, 2s, and 2p orbitals, respectively. The 1s box contains two arrows, one pointing up and one down. The 2s box contains two arrows both pointing up. The first box in the 2p set contains a single arrow pointing up. The second 2p box contains two arrows, one pointing up and one down. The third box is empty." ></div></span></div></div></div><div class="vvH7Vk"></div></div></div></div><div class="HPyS5S"><div class="_nTV44"><div class="mQ2ng7"><button class="b2MwID _7kVomt mCJUoM qcgHIn _9bkrhG" aria-expanded="false"><span data-content="Comments">0</span><img alt="Check" src="/channels/images/CommentWhite.svg"/></button></div><div class="mQ2ng7"><button class="b2MwID _7kVomt rHnzx9 DvhjCe"><span>Show Answer</span></button></div></div><div class="Yn1DrV"></div></div><script type="application/ld+json">{"@context":"https://schema.org","@type":"Quiz","url":"https://www.pearson.com/channels/general-chemistry/asset/0d6c2aba/which-electron-configuration-violates-the-pauli-exclusion-principle","name":"Quiz about The Electron Configuration: Condensed","educationalLevel":"intermediate","typicalAgeRange":"16-40","assesses":"The Electron Configuration: Condensed","educationalAlignment":[{"@type":"AlignmentObject","alignmentType":"educationalSubject","targetName":"General Chemistry"},{"@type":"AlignmentObject","alignmentType":"educationalSubject","targetName":"The Electron Configuration: Condensed"}],"about":{"@type":"Thing","name":"The Electron Configuration: Condensed"},"hasPart":[{"@type":"Question","eduQuestionType":"Multiple choice","learningResourceType":"Practice problem","name":"Question to test your The Electron Configuration: Condensed knowledge","text":"Which electron configuration violates the Pauli exclusion principle?","encodingFormat":"text/html","suggestedAnswer":[{"@type":"Answer","position":0,"encodingFormat":"text/html","text":"<img src= \"tro_pq_c9q2a.jpg\" alt=\"Orbital diagram showing a series of boxes, a single box, a single box, and a set of thee boxes, left to right representing the 1s, 2s, and 2p orbitals, respectively. The 1s box contains two arrows, one pointing up and one down. The 2s box contains two arrows, one pointing up and one down. The first two boxes in the 2p set each contain a single arrow pointing up. The third box is empty.\">","comment":{"@type":"Comment","text":"This orbital diagram represents a correct electron configuration."}},{"@type":"Answer","position":1,"encodingFormat":"text/html","text":"<img src= \"tro_pq_c9q2b.jpg\" alt= \"Orbital diagram showing a series of boxes, a single box, a single box, and a set of thee boxes, left to right representing the 1s, 2s, and 2p orbitals, respectively. The 1s box contains two arrows, one pointing up and one down. The 2s box contains two arrows, one pointing up and one down. The first box in the 2p set contains a single arrow pointing up. The second 2p box contains two arrows, one pointing up and one down. The third box is empty.\" >","comment":{"@type":"Comment","text":"In this orbital diagram, there is violation of Hund](tro_pq_c9q2c.jpg)
","comment":{"@type":"Comment","text":"Correct, in the 2s orbital the two electrons have the same spin and the same four quantum numbers."}}}]}
Verified step by step guidance1
Understand the Pauli exclusion principle: It states that no two electrons in an atom can have the same set of four quantum numbers. This means that each electron in an atom must have a unique combination of quantum numbers.
Review the concept of electron configuration: Electron configurations describe the distribution of electrons in an atom's orbitals. Each orbital can hold a maximum of two electrons with opposite spins.
Identify the quantum numbers: The four quantum numbers are the principal quantum number (n), the azimuthal quantum number (l), the magnetic quantum number (m_l), and the spin quantum number (m_s).
Check for violations: In a given electron configuration, ensure that no two electrons in the same orbital have the same spin quantum number (m_s). If two electrons in the same orbital have the same spin, this configuration violates the Pauli exclusion principle.
Analyze the options: Look at the provided electron configurations and identify any that have two electrons in the same orbital with identical spins. This will be the configuration that violates the Pauli exclusion principle.
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