The number of valence electrons and the number of shells are THE two most important factors
An atom is the smallest particle of an element
Reactivity refers to how vigorously an atom is to react with other substances.
Electron Configuration
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Outer, or valence, shell electrons do.
true
Reactivity refers to how vigorously an atom is to react with other substances.
Electron Configuration
It's determine by the vacancy (unfilled orbital) in the outermost shell of an atom.
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Outer, or valence, shell electrons do.
The reactivity of an atom is due to its number and arrangement of __________ in the outer energy level (or orbit). your question was confusing but I was able to interperet it. the answer is Electrons
Boron (atomic number 5) is more reactive than neon (atomic number 10).
Describe the reactivity of halogens
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For metals high electronegativity mean low reactivity; for halogens, C, O, N, S, etc. the meaning is high reactivity.