Which of the following is the first artificially prepared element?

Correct answer: (b) Tc

Explanation

Technetium (Tc) is the first artificially prepared element, made in 1937 by Carlo Perrier and Emilio Segrè.

It was produced by bombarding molybdenum with deuterons in a cyclotron, as it does not occur naturally on Earth.

Tellurium (Te), Thorium (Th) and Thallium (Tl) are all naturally occurring elements.