What is the name of a metallic radioactive transuranic element with atomic number 101 in the actinide series, discovered in 1955?

Correct option is C

The correct answer is (c) Mendelevium.
 Mendelevium is a metallic radioactive transuranic element with the atomic number 101.
 It is part of the actinide series in the periodic table.
 Mendelevium was discovered in 1955 by a team of scientists at the University of California, Berkeley.
 The team was led by Albert Ghiorso, Glenn T. Seaborg, and Bernard G. Harvey.
 The element was named after Dmitri Mendeleev, the Russian chemist who created the Periodic Table of Elements.
 Mendelevium is produced by bombarding einsteinium with alpha particles (helium nuclei).
 It is highly radioactive, with its most stable isotope, Md-258, having a half-life of about 51.5 days.
 Due to its short half-life and the difficulty of production, mendelevium has no significant commercial applications and is primarily used for scientific research.