Chemistry
Senior High
(エ)の答えが+1なのですがなぜですか？
1 次の(ア)~(ク)の物質において, 下線を引いた原子の酸化数をそれぞれ答えよ。
(ア) Br2
(イ) Fe2O3
(ウ) H2SO4
(エ)
AgCl
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Clの酸化数-1 というのは覚えるものですか？