What are the metal bearing rocks called?
Correct answer: D. Ores
- A. Bitumen
- B. Bauxite
- C. Metalloids
- D. Ores
Explanation
Metal-bearing rocks from which metals can be extracted economically are called ores. Bauxite is only one specific ore, mainly the chief source of aluminium, whereas ores include many different mineral deposits. Students may choose bauxite because it is a familiar metal-bearing rock, but the question asks for the general name.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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