Question

Find the charge and stock name of each formula. Sn1O3 ( Sn1O2.5 ) Sn2O5 Sn1O2, stannic oxide ( Sn1O1.5 ) Sn2O3 Sn1O1 ( Sn1O0.5 ) Sn2O1

Answer 1

The charge on the tin ion is the same as the Roman numeral in the Stock name.

SnO₃ = tin(VI) oxide

Sn₂O₅ = tin(V) oxide

SnO₂ = tin(IV) oxide

Sn₂O₃ = tin(III) oxide

SnO = tin(II) oxide

Sn₂O = tin(I) oxide

Each oxide ion has a charge of -2.

To get the charge on a tin ion, you calculate the total charge on the O ions. Then you change the sign and divide by the number of Sn ions.

E.g., for Sn₂O₅: Charge on 1 O = -2; charge on 5 O = -10; charge on 2 Sn = +10; charge on 1 Sn = +5.