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the number of valence electrons in an element affects the reactivity of that element. which element listed has the fewest valence electrons?

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Lanuel

The element with the fewest valence electrons among the chemical elements listed is: B. Sodium (Na).

Valence electrons can be defined as the number of electrons present in the outermost shell of the atom of a chemical element.

Basically, valence electrons determines whether an atom or group of chemical elements found in a periodic table can bond with others.

This ultimately implies that, the number of valence electrons in a chemical element determines its chemical reactivity with other chemical elements.  

In the periodic table, chemical elements that are having the same number of valence electrons are found in the same group (column).  

Sodium (Na) has an atomic number of eleven (11) and as such it has one (1) valence electron in its outermost shell.

  • Beryllium (Be) has two valence electrons.
  • Oxygen (O) has six valence electrons.
  • Neon (Ne) has eight valence electrons.

In conclusion, Sodium (Na) is the element with the fewest valence electrons among the chemical elements listed.

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This question is incomplete because it is lacking the necessary answer options, which I have provided below:

A. Beryllium (Be).

B. Sodium (Na).

C. Oxygen (O).

D. Neon (Ne).

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