Fairly reactive metals found as ores are those that readily react with oxygen and other elements in the environment. They are typically found in the Earth's crust as compounds, rather than in their pure elemental form. Here are some examples:

1. Aluminum (Al): Found as bauxite (AlO(OH) and Al(OH)3)

2. Sodium (Na): Found as halite (NaCl) and other sodium salts like trona (Na3(CO3)(HCO3).2H2O)

3. Potassium (K): Found as sylvite (KCl) and other potassium salts like carnallite (KMgCl3.6H2O)

4. Calcium (Ca): Found as limestone (CaCO3) and other calcium salts like gypsum (CaSO4.2H2O)

5. Magnesium (Mg): Found as magnesite (MgCO3) and other magnesium salts like dolomite (CaMg(CO3)2)

6. Iron (Fe): Found as hematite (Fe2O3), magnetite (Fe3O4), and siderite (FeCO3)

Why are these metals found as ores?

* Reactivity: These metals are highly reactive, meaning they readily form compounds with other elements like oxygen. This prevents them from existing in their pure elemental form in nature.

* Abundance: They are relatively abundant in the Earth's crust, making their extraction and processing economically viable.

Note: While these metals are considered "fairly reactive," they are not as reactive as alkali metals like lithium (Li) or sodium (Na) which are never found in their pure elemental form in nature.