70th B.P.S.C. Pre-2024
Which of the following is the first artificially prepared element ?
aTe
bTc✓ Correct
cTh
dTl
Explanation
The first artificially prepared element is Technetium (Tc), whose atomic number is 43. Its molar mass is 98.91 g mol-1. It was isolated in 1937 by Carlo Perrier and Emilio Segrè.
general-science