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HNO₃ 3×2-1=5
HCLO₃3×2-1=5
H₃PO₄4×2-3=5
H₄SiO₄4×2-4=4
H₄P₂O₇7×2-4=10÷2=5
ost nie jestem pewna
HNO₃-5wart.(1+x+3*(-2)=5)
HCLO₃-5 wart.(1+x+3*(-2)=5)
H₃PO₄-5 wart.3*1+x+4*(-2)=5)
H₄SiO₄-4 wart.4*1+x+4*(-2)=4)
H₄P₂O₇-5 wart.4*1+2x+7*(-2)=5)