How many times was Mendeleev nominated for the Nobel Prize in Chemistry? Dmitri Mendeleev was nominated 9 times.
The Nobel Prize nomination archive records nine separate chemistry nominations for Mendeleev. They were submitted during the final three years of his life: 1905, 1906, and 1907.
He received three nominations in 1905, four in 1906, and two in 1907. Therefore, “three times” describes the number of years in which he was nominated, not the total number of nominations.
The 1906 Chemistry Committee recommended Mendeleev for the prize because of his discovery of the periodic system. The Swedish Academy nevertheless awarded that year’s prize to Henri Moissan.
Mendeleev died in February 1907, before he could receive the award. The nine nominations are distinct nomination submissions, making 9 the most precise answer to the question as written.