Valency factor of Al2(SO4)3 will be :

The valency factor of Al2(SO4)3 can be determined by understanding the valency of the individual elements and how they combine in the compound.

1. Aluminium (Al) has a valency of +3. Since there are two aluminium atoms in the compound, the total positive charge contributed by aluminium is +6.

2. Sulfate (SO4) has a valency of -2. Since there are three sulfate ions in the compound, the total negative charge contributed by sulfate is -6.

3. The valency factor of a compound is the absolute sum of the charges contributed by the cations and anions. In this case, the valency factor of Al2(SO4)3 is |+6 - 6| = 0.

However, it's important to note that in redox reactions, the valency factor is determined by the change in oxidation state. In this case, since there's no redox reaction involved, the valency factor is 0.