Respuesta :

Answer:

[tex]Lithium=Li2s^1\\Sodium=Na3s^1\\Potassium=K4s^1\\Rubidium=Rb5s^1\\Cesium=Cs6s^1\\Francium=Fr7s^1[/tex]

Explanation:

When it comes to electron configuration and orbitals, it's important to first identify what exactly we are trying to identify. Below is a given example:

[tex]He1s^2[/tex]

[tex]He=element[/tex]

[tex]1=level[/tex]

[tex]s=orbital[/tex]

[tex](exponent)^2=electrons[/tex]

Looking at the periodic table, identify the alkali metal family on the periodic table, or group one elements:

[tex]Lithium=Li2s^1\\Sodium=Na3s^1\\Potassium=K4s^1\\Rubidium=Rb5s^1\\Cesium=Cs6s^1\\Francium=Fr7s^1[/tex]

Notice how each configuration has an exponent of [tex]1[/tex], representative of a single electron in their s-orbital.

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