Unit 4B: Shorthand (Noble Gas) Configuration

Vocabulary flashcards covering noble gas electron configuration shorthand, expanded configurations, and orbital spin diagrams from Unit 4B.

Noble Gas Notation

An accepted shorthand notation used by scientists to avoid the tedious and long process of writing or drawing out electron configurations for large atoms with many electrons.

Noble Gas Shorthand Procedure

The method of placing the symbol of the noble gas that precedes the element inside square brackets, then completing the remaining electron configuration from there.

Expanded Electron Configuration for Strontium ($Sr$, $\#38$)

$$1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2$$

Noble Gas Shorthand for Strontium ($Sr$, $\#38$)

$$[\text{Kr}]\,5s^2$$

Expanded Electron Configuration for Gold ($Au$, $\#79$)

$$1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^6 5s^2 4d^{10} 5p^6 6s^2 4f^{14} 5d^9$$

Noble Gas Shorthand for Gold ($Au$, $\#79$)

$$[\text{Xe}]\,6s^2 4f^{14} 5d^9$$

Noble Gas Shorthand for Bromine ($Br$, $\#35$)

$$[\text{Ar}]\,4s^2 3d^{10} 4p^5$$

Noble Gas Shorthand for Zirconium ($Zr$, $\#40$)

$$[\text{Kr}]\,5s^2 4d^2$$

Noble Gas Shorthand for Tungsten ($W$, $\#74$)

$$[\text{Xe}]\,6s^2 4f^{14} 5d^4$$

Noble Gas Shorthand for Radon ($Rn$, $\#86$)

$$[\text{Xe}]\,6s^2 4f^{14} 5d^{10} 6p^6$$

Noble Gas Shorthand for Radium ($Ra$, $\#88$)

$$[\text{Rn}]\,7s^2$$

Noble Gas Shorthand for Uranium ($U$, $\#92$)

$$[\text{Rn}]\,7s^2 5f^4$$

Orbital Spin Diagram for Manganese ($Mn$, $\#25$)

$[\text{Ar}]$ followed by one box for $4s$ with paired opposing electrons ($\uparrow\downarrow$) and five boxes for $3d$ each containing one unpaired electron ($\uparrow$).

Orbital Spin Diagram for Iodine ($I$, $\#59$)

$[\text{Kr}]$ followed by one filled $5s$ box ($\uparrow\downarrow$), five filled $4d$ boxes ($\uparrow\downarrow$ each), and three $5p$ boxes containing five total electrons ($\uparrow\downarrow\,\uparrow\downarrow\,\uparrow$).

Orbital Spin Diagram for Cesium ($Cs$, $\#55$)

$[\text{Xe}]$ followed by one box for $6s$ containing a single unpaired electron ($\uparrow$).