Which element is so active chemically that it occurs naturally only in compounds?
1. potassium
2. silver
3. copper
4. sulfur

1) POTASSIUM is an element that is chemically active that it occurs naturally only in compounds.

Potassium is one of the alkali metals; alkali metals are the most active metals.
Potassium is so active that it never occurs free in nature. It always occurs in compounds, combined with other elements.

95% of potassium is used as fertilizers, the remaining 5% is divided into creating potassium hydroxide, potassium chloride solution, and potassium carbonate.

Potassium hydroxide is used to make soaps and detergents.
Potassium chloride is used in pharmaceuticals, medical drips, and saline injections.
Potassium carbonate is used in glass manufacturing; particularly, glass used in television sets.
Other potassium salts are used in making iodized salts, used in baking, tanning leather, and photography.

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