Ag(+1)20(-2)

S2(+1)N(+2)O2(-2)

Ni(+3)(OH)3(-1)

H(+1)N(+5)O3(-2)

Fe2(+3)S3(-2)

NH4(+1)OH(-1)

Fe(+3)Br3(-1)

Zn(0)

K2(+1)Be(+2)O2(-2)

(NH4)3(+1)P(+5)O4(-2)

Mg3(+2)(PO4)2(-3)

K(+1)H(+1)S(+6)O4(-2)

Al(+3)(NO3)3(-1)

P4(+5)O10(-2)

Ag+1  О-2

S+1 N+2 O-2

Ni+3 (OH)3 -1

H+1 NО-1

Fe+1 S-2

NH+1 OH-1

Fe+3 Br-1

Zn 0

 K+1 BeO-2 (NH4)+1     PO4 -3 Mg+2 (PO4)-3 K+1 H+1 SO4 -2 Al+3 (NO3)-1 P4+5 O10 -2