Объяснение:
Na(+1)Br(+7)O4(-2)
K3(+1)As(+5)O4(-2)
H2(+1)Cr(+6)O4(-2)
Al2(+3)O2(-2)
Na2(+1)Cr2(+6)O7(-2)
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Объяснение:
Na(+1)Br(+7)O4(-2)
K3(+1)As(+5)O4(-2)
H2(+1)Cr(+6)O4(-2)
Al2(+3)O2(-2)
Na2(+1)Cr2(+6)O7(-2)