16.2
1) Cr+3; O-2; H+
2) H+; Cl+; O-2
3) S+4; O-2
4) Cl+5; O-2
5) I+3; Сl-
6) Ca+2; C+4; N-3
7)K+; Al+3; S+2; O-2
16.3
K+; Cr+3; S+6; O-2
2) .
16.2
1) Cr+3; O-2; H+
2) H+; Cl+; O-2
3) S+4; O-2
4) Cl+5; O-2
5) I+3; Сl-
6) Ca+2; C+4; N-3
7)K+; Al+3; S+2; O-2
16.3
K+; Cr+3; S+6; O-2
2) .