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by light_hue_1 1016 days ago
Not a chemist, but yeah, that's just a typo.

> All atoms are reactive except the noble gases (group 18). These are stable due to a full outer shell. For organic chemistry is NEON or 8 valence electrons is key.

It should probably say something like. "For organic chemistry, what you see in NEON, attaining those 8 valence electrons, is key." Atoms want to participate in bonds to reach what Neon already has going on, 8 valence electrons. A full valence shell.