aliannah2018 aliannah2018

02-02-2021
Physics

contestada

Which element has a complete valence electron shell?

selenium (Se)
oxygen (O)
fluorine (F)
argon (Ar)

Respuesta :

quasarJose quasarJose

03-02-2021

Answer:

argon (Ar)

Explanation:

Argon is the element from the given choices with a complete valence electron shell.

The valence electron shell is the outermost shell of an atom.

Elements with complete outermost shell are found in the 8th group on the period table.
In the 8th group, the elements are generally inert and unreactive.
Elements with this configuration have 8 electrons in their outermost shell and 2 for helium.
Some of the elements in this group are Helium and Neon

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