According to table f which ions combine with chlorine ions to form an insoluble compound 1- fe2+ions.
2- ca2+ions
3- li+ions.
4-ag+ions

Option (4) is the correct answer.

Explanation:

When silver ions combine with chlorine ions then it results in the formation of silver chloride (AgCl).

The forces holding silver and chlorine atoms together are strong enough to be overcome by the formation of hydrated ions, that is, and  .

Hence, AgCl is insoluble in water.

Whereas are soluble in water.

? you expect us to answer this? ? this is your schoolwork, i don't think we can with this, i think it would considering being

a corroding iron, if that's one of your choices