The most reactive metal is _____.

Sodium

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Magnesium

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Potassium

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Calcium

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Solution

The correct option is C
Potassium

Explanation for correct option:
C.Potassium
Metallic element:
Elements with metallic character are placed in alkali metals, alkaline earth metals as well as transition metals.
Metallic character is associated with the elements that are metals.
Most of the metals are hard, have high melting/boiling points, and are malleable as well as ductile.
Among Sodium and Potassium, Potassium is the most reactive metal as it has lower ionization energy than sodium due to its bigger atomic size.
Explanation for incorrect options:
Magnesium and calcium are less reactive than Potassium. Thus options A, B, and D are incorrect.
Hence, the correct option is C i.e. Potassium.

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