Based on the reactivity series, which of the following metals can be extracted by the process of electrolysis?Options:CalciumCopperZincGold

The reactivity series of metals is a chart that lists metals in order of decreasing reactivity. In this series, the most reactive metals are found at the top, while the least reactive metals are found at the bottom.

The process of electrolysis is used to extract metals that are above carbon in the reactivity series. This is because these metals are too reactive to be extracted by reduction with carbon.

Looking at the options provided:

1. Calcium is above carbon in the reactivity series, so it can be extracted by electrolysis.
2. Copper is below carbon in the reactivity series, so it cannot be extracted by electrolysis. Instead, it is usually extracted by reduction with carbon.
3. Zinc is above carbon in the reactivity series, so it can be extracted by electrolysis.
4. Gold is a very unreactive metal and is found at the bottom of the reactivity series. It is often found in its native state and does not need to be extracted from an ore. However, if it did need to be extracted, it would not be done by electrolysis because it is below carbon in the reactivity series.

So, based on the reactivity series, the metals that can be extracted by the process of electrolysis from the options provided are Calcium and Zinc.