In the swirling chaos of 19th-century chemistry, one man dared to see the invisible structure beneath the confusion—Mendeleev noticed regularities others had overlooked. He didn’t have advanced instruments or a formal theory to guide him—only handwritten cards, careful observation, and an unusual way of thinking. Unlike others, he didn’t merely catalogue what was known—he anticipated what was missing. His early life experiences, scientific training, and unique mindset came together to produce the periodic table: a simple idea with profound consequences that reshaped chemistry forever.
From Siberia to Science: Mendeleev’s Formative Years
Born on February 8, 1834, in Tobolsk, a remote Siberian town, he was likely the youngest of 14 or possibly 17 children. His father, Ivan Pavlovich Mendeleev, a teacher and school principal, lost his sight when Dmitri was still a boy, leaving the family in financial distress. Dmitri’s mother, Maria Dmitrievna, revived a long-defunct glass factory in a bid to support the family, showing early signs of the grit that would define her son’s path.
At age 13, Dmitri faced a series of misfortunes: his father passed away, and the glass factory was destroyed by fire. Recognizing her son’s talent, Maria decided to pursue higher education for him—an ambitious dream for a financially struggling Siberian family. She set off with Dmitri and two siblings on a 2,000-kilometre journey across Russia. Their initial destination, Moscow University, rejected Mendeleev due to his Siberian heritage. Undeterred, Maria pressed on to St. Petersburg, where he was accepted into the Main Pedagogical Institute, a teacher training seminary turned university.
Tragedy shadowed the young Mendeleev’s academic beginnings. Shortly after admission, his mother and one of his sisters died of tuberculosis. Dmitri himself contracted the disease but survived. After graduating in 1855, he was posted as a teacher in Simferopol on the Crimean Peninsula to recover in the warmer climate. Unfortunately, the outbreak of the Crimean War forced the school’s closure, and he was relocated to Odessa before eventually returning to St. Petersburg.
Academic Ascent and Global Exposure
By 1856, Mendeleev began two years of doctoral research on the interaction of alcohols with water. He later dedicated his dissertation to his mother with the words: “Conducting a factory, she educated me by her own word, she instructed by example, corrected with love, and to give me the cause of science she left Siberia with me… When dying she said: ‘Be careful of illusion; work, search for divine and scientific truth.’”
In 1859, Mendeleev travelled to Western Europe to continue his studies. He worked under Henri Victor Regnault in Paris and later under Robert Bunsen and Gustav Kirchhoff in Heidelberg, mastering new techniques like spectroscopy. During this time, he amassed vast chemical data that would later prove foundational to his most famous discovery.
In 1860, Mendeleev joined a constellation of great chemists at the Karlsruhe Congress in Germany—the first international chemistry conference. The meeting helped resolve widespread confusion over atomic weights, and the work of Italian chemist Stanislao Cannizzaro, based on Avogadro’s hypotheses, would significantly influence Mendeleev’s future organization of the elements.
The Periodic Revelation: Discovering Order in the Elements
Returning to Russia, he published a 500-page Russian textbook on organic chemistry by the age of 27, which earned him the prestigious Demidov Prize. Still unsatisfied with available teaching materials, he authored Osnovy khimii (The Principles of Chemistry) between 1868 and 1871, a work that became a foundational text and ran through many editions.
It was during this period, while preparing a chapter on halogens, that Mendeleev began organizing elements using cards—each containing data about a specific element. On February 17, 1869, he noticed a pattern: when arranged by increasing atomic weight, elements with similar properties appeared at regular intervals. This was the basis of his periodic law. His formulation not only left intentional gaps for undiscovered elements but also corrected atomic weights for elements like beryllium and uranium to fit the emerging order.
Despite similar efforts by contemporaries such as Newlands, Odling, and Lothar Meyer, it was Mendeleev’s predictive accuracy that distinguished his version of the periodic table. He predicted the properties of unknown elements—such as eka-aluminium (gallium), eka-boron (scandium), and eka-silicon (germanium)—which were discovered over the next two decades and closely matched his forecasts.
Beyond Chemistry: A Mind of Many Pursuits
But chemistry was only one dimension of Mendeleev’s work. His interests spanned physics, engineering, agriculture, metrology, and economics. He helped develop the Russian petroleum industry, visiting oilfields in Baku and Pennsylvania. He promoted the use of fertilizers, even testing them on his own property. He introduced the metric system to Russia, developed his own formulation of smokeless gunpowder for the navy, and even built Russia’s first oil refinery.
A true polymath, Mendeleev designed the world’s first Arctic icebreaker, Yermak, launched in 1898. He wrote more than 40 scientific papers on shipbuilding and Arctic navigation. In 1887, he made a solo ascent in a hot-air balloon to observe a solar eclipse—despite no experience in ballooning and no clear plan for landing.
Personal Life and Controversies
In personal life, Mendeleev’s relationships were often stormy. Pressured by his sister, he married Feozva Leshcheva in 1862. The marriage produced two children but was strained and eventually dissolved. In 1880, he fell in love with 19-year-old Anna Popova, a music student. Despite Orthodox Church restrictions and the scandal it caused, he married her in 1882, before the permissible six-year period following his divorce had passed. Together, they had four children.
Mendeleev’s influence extended into political and public life. He was a co-founder of the Russian Chemical Society in 1868 and continued to publish prolifically—over 400 works, including scientific treatises, popular science, and economic proposals. His involvement with student protests in 1890 led to his resignation from St. Petersburg University. He subsequently became Director of the Central Bureau of Weights and Measures, where he modernized Russian standards and even employed women in scientific roles, rare at the time.
Not all of Mendeleev’s scientific stances aged well. He was skeptical of emerging theories like electrolysis and radioactivity. He rejected the existence of electrons and remained deeply committed to the individuality of elements. In fact, he attempted to classify the ether as a chemical element—a theory he outlined in his 1902 work An Attempt Towards a Chemical Conception of the Ether. This effort to integrate all physical phenomena within a Newtonian framework, though ultimately incorrect, underscored his enduring philosophical approach to science.
Legacy of a Visionary Scientist
Despite being nominated for the Nobel Prize twice, Mendeleev never received it—reportedly due to political and personal disagreements within the selection committee. Nonetheless, he was awarded the Davy Medal (1882) and elected a Foreign Member of the Royal Society (1892).
On January 20, 1907 (OS), Mendeleev passed away from influenza at the age of 72. At his State funeral, students carried a large periodic table aloft—a fitting tribute to the man who brought such clarity and order to chemistry. He was buried beside his mother in the Volkova cemetery in St. Petersburg. His gravestone bears only his name.
In lasting homage, element 101 was named mendelevium in 1955, discovered by bombarding einsteinium with alpha particles. His legacy is further honoured by a lunar crater, a minor planet, and countless institutions and scientific awards bearing his name. The periodic table—flexible and ever-expanding—remains his enduring monument, a testament to his ability to bring coherence to the chaos of nature.
References:
https://www.rsc.org/news-events/profiles/2019/jan/dmitri-mendeleev/
https://www.thoughtco.com/dmitri-mendeleev-biography-607116
https://edu.rsc.org/feature/mendeleev-the-man-and-his-legacy-/2020190.article
https://www.britannica.com/biography/Dmitri-Mendeleev
https://digital.sciencehistory.org/works/6682x411q?gad_source=1&gad_campaignid=17746815780&gbraid=0AAAAADB6wSKBiJcmnlJ0rtvmMQnz3m7_m&gclid=CjwKCAjwo4rCBhAbEiwAxhJlCcSG22OYnl4x8VVdoO2cSiko0aCZDcoL-_VMos7DTOm_HddP5i5F2xoCIXoQAvD_BwE – Image credit
