Mendelevium Shuuritsumori

Element 101. Named after Dmitri Mendeleev, creator of the periodic table — honoring the greatest discovery in chemistry. In 1955, Ghiorso's team at Berkeley bombarded einsteinium with alpha particles and proved its existence with only 17 atoms. The first element produced one atom at a time. Md-258 half-life is 51.5 days — a brief existence, yet it embodies the immortal periodic law as its guardian