Which is most likely to influence the properties of an element? * -its atomic mass
-its atomic number
-the number of outer electroms
-the number of isotopes

-the number of outer electrons

Explanation:

Outer electrons are referred to as valence electrons and they are typically what determines the property of an elements such as their reactivity.

For eg, Na (sodium) has 1 valence electron and it really wants to give it aways so it can return back to octet rule (having 8 electrons in outershell) to become stable. So when you put sodium in water (you can watch videos of it) it literally blows because of high reactivity.

a galvanic cell( aka voltaic cell) and electrolytic cell

explanation:

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