Ответ:
H(+1)N(+5)O3(-2)
K(+1)Mn(+7)O4(-2)
Cu(+2)S(+6)O4(-2)
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Ответ:
H(+1)N(+5)O3(-2)
K(+1)Mn(+7)O4(-2)
Cu(+2)S(+6)O4(-2)