QuestionAugust 19, 2025

A student attempts to draw the electron configuration of an atom that has 7 electrons using orbital notation. Is the diagram correct or incorrect? square Which rule is violated? square

A student attempts to draw the electron configuration of an atom that has 7 electrons using orbital notation. Is the diagram correct or incorrect? square Which rule is violated? square
A student attempts to draw the electron configuration of an atom that has 7 electrons using orbital
notation.
Is the diagram correct or incorrect?
square 
Which rule is violated?
square

Solution
4.4(196 votes)

Answer

Incorrect; Hund's Rule is violated. Explanation 1. Determine Electron Configuration The electron configuration for an atom with 7 electrons is 1s^2 2s^2 2p^3. 2. Apply Hund's Rule Hund's Rule states that electrons must occupy all orbitals singly before pairing. In the 2p orbital, electrons should be placed in separate orbitals first. 3. Check Diagram Verify if the diagram places three electrons in separate 2p orbitals before any pairing occurs.

Explanation

1. Determine Electron Configuration<br /> The electron configuration for an atom with 7 electrons is $1s^2 2s^2 2p^3$.<br />2. Apply Hund's Rule<br /> Hund's Rule states that electrons must occupy all orbitals singly before pairing. In the $2p$ orbital, electrons should be placed in separate orbitals first.<br />3. Check Diagram<br /> Verify if the diagram places three electrons in separate $2p$ orbitals before any pairing occurs.
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