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Sofia Langosh ∙
a numbering system for the periodic table.
Or a trend that periodically shows up.
A full octet makes the noble gases nonreactive.
The energy of the valence electrons is greater than the energy of the core electrons.
From the elements given, argon shows the least reactivity.
Helium has the highest first ionization energy and francium has the lowest first ionization energy.
question: which of the following elements is the smallest?
answer: chlorine (CI)
A chemical bond holds atoms together