Problem: Select the element(s) that will have one unpaired electron in the p orbital.Ne, S, Cl, Al, Mg

FREE Expert Solution

We are being asked to determine the element(s) that will have one unpaired electron in the p orbital. Let’s first write the electron configuration of each element.

Neutral element:       Atomic number = # protons = # of electrons

Recall:

s orbital  can hold a maximum of 2 electrons
p orbitals → can hold a maximum of 6 electrons
d orbitals → can hold a maximum of 10 electrons
f orbitals → can hold a maximum of 14 electrons


When filling up the orbitals, keep in mind:

Aufbau Principle  totally fill in the lowest energy orbital first
Hund’s Rule  electron orbitals that are degenerate (same energy orbitals) are first half-filled before they are totally filled  

Ne:

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Problem Details

Select the element(s) that will have one unpaired electron in the p orbital.

Ne, S, Cl, Al, Mg

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