An alkaline earth metal:

potassium

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calcium

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lead

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copper

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Solution

The correct option is C calcium
Calcium belongs to group 2 or group II A of the periodic table. Elements of group 2 are known as alkali earth metals. These elements are obtained from the earth's crust hence the name alkali and the oxides form by these elements are alkaline in nature. Hence, the name given alkaline earth metals.

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