Question : An element that does not occur in nature but can produced artificially is
Option 1: Thorium
Option 2: Radium
Option 3: Plutonium
Option 4: Uranium
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Correct Answer: Plutonium
Solution : The correct answer is Plutonium.
Plutonium is an artificial metal i.e. it is not found naturally in large amounts. It has an atomic number of 94 and is placed in actinide series in the periodic table. It is an radioactive material and is formed when Uranium absorbs neutrons. Plutonium releases alpha particles, and it was discovered in 1940.
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