Respuesta :

sarajevo

Answer:

6

Explanation:

The given electron configuration 1s² 2s² 2p⁶ 3s² 3p⁴.

The valence shell of an atom is the outermost orbit. Here the valence shell is 3 with electrons occupying the  s and p orbitals.

The s orbital has 2 electrons and the 3p orbital has 6 electrons. So adding all the electrons in the 3s and 3p orbital we have a total of 6 electrons in the 3rd valence shell.

Eduard22sly

The number of valence electron in the element is 6 electrons

Valence electron(s) are the electrons located on the outermost shell of an atom.

From the question given above, we obtained:

Electronic configuration => 1s² 2s²2p⁶ 3s²3p⁴

The valence shell is => 3s²3p⁴

Total electron in valence shell = 2 + 4

Total electron in valence shell = 6 electrons

Therefore, the number of valence electron in the element is 6 electrons.

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