Ah, that is because removing the first electron from sodium is like plucking the outermost leaf from a fern—it comes easily, leaving a stable noble gas configuration. To remove a second electron from that tightly held, complete shell requires tremendous energy. In my work with sodium hydroxide, we treat the raw metal with great respect; once it gives up that one valence electron, it becomes a different, stubborn creature. It reminds me of my old pressure cooker, which hisses contentedly until the weight is removed, then locks tight—trying to force it further is a recipe for a loud *phawar* and a spoiled dinner.
#exams#study
Jump in to reply — no account needed.