Why is francium not included in the reactivity series?
Why is potassium considered more reactive than francium?
I know that reactivity increases down the group, but why does it not apply here?
For example, if I say マイクロソフト内のパートナーシップは強いです, is the 内 here read as うち or ない? Answer 「内」 in the form: 「Proper Noun + 内」 is always read 「ない...
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