а) MgO: Mg^2+ 2+2+2+, O^2- −2-2−2 SO3: S^6+ 6+6+6+, O^2- −2-2−2 CS2: C^4+ 4+4+4+, S^4- −2-2−2 PF5: P^5+ 5+5+5+, F^- −1-1−1 IF5: I^7+ 7+7+7+, F^- −1-1−1 WO3: W^6+ 6+6+6+, O^2- −2-2−2
б) HNO3: H^1+ 1+1+1+, N^5+ 5+5+5+, O^2- −2-2−2 CaCO3: Ca^2+ 2+2+2+, C^4+ 4+4+4+, O^2- −2-2−2 Na2SiO3: Na^1+ 1+1+1+, Si^4+ 4+4+4+, O^2- −2-2−2 ZnNO2NO2NO22: Zn^2+ 2+2+2+, N^3+ 3+3+3+, O^2- −2-2−2
а) MgO: Mg^2+ 2+2+2+, O^2- −2-2−2 SO3: S^6+ 6+6+6+, O^2- −2-2−2 CS2: C^4+ 4+4+4+, S^4- −2-2−2 PF5: P^5+ 5+5+5+, F^- −1-1−1 IF5: I^7+ 7+7+7+, F^- −1-1−1 WO3: W^6+ 6+6+6+, O^2- −2-2−2
б) HNO3: H^1+ 1+1+1+, N^5+ 5+5+5+, O^2- −2-2−2 CaCO3: Ca^2+ 2+2+2+, C^4+ 4+4+4+, O^2- −2-2−2 Na2SiO3: Na^1+ 1+1+1+, Si^4+ 4+4+4+, O^2- −2-2−2 ZnNO2NO2NO22: Zn^2+ 2+2+2+, N^3+ 3+3+3+, O^2- −2-2−2