Which ion would represent the ion of an element from Group 2A?
A2+
Y3+
X2-
Z+

Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).

The best answer is the third option, a pottery art studio.

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