can you mention any particular achievement ?
He investigated the expansion of liquids with heat, and devised a formula similar to Gay-Lussac's law of the uniformity of the expansion of gases
Dmitri Mendeleev
In another department of physical chemistry, he investigated the expansion of liquids with heat, and devised a formula similar to Gay-Lussac's law of the uniformity of the expansion of gases, while in 1861 he anticipated Thomas Andrews' conception of the critical temperature of gases by defining the absolute boiling-point of a substance as the temperature at which cohesion and heat of vaporization become equal to zero and the liquid changes to vapor, irrespective of the pressure and volume.
what does the column in the periodic table mean The columns, called groups, contain elements with similar chemical behaviours. what is this tabular structure used for? To classify chemical elements which are arranged by atomic number, electron configuration, and recurring chemical properties. The structure of the table shows periodic trends. does this contain only metals? No, it also contains metalloids, nonmetals and noble gases. where are the first one placed in the table? Somewhere between metals and nonmetals what are the different types of the former substance mentioned by you? Boron, silicon, germanium, arsenic, antimony and that of the latter? hydrogen, helium, nitrogen, oxygen,  fluorine, neon by whom was this table first developed? Dmitri Mendeleev who was he? A Russian chemist and inventor. where was he born? Verkhnie Aremzyani, Siberia can you name any institution that he attended either as a student or a faculty? UNANSWERABLE who were his parents? Ivan Pavlovich Mendeleev, Maria Dmitrievna Mendeleeva when did he develop the table? 1869 what other things is he famous for? He researched in the fields of hydrodynamics, meteorology, geology, certain branches of chemical technology
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Dmitri Mendeleev [SEP] Other achievements
Of these two proposed elements, he thought the lighter to be an all-penetrating, all-pervasive gas, and the slightly heavier one to be a proposed element, "coronium". Mendeleev devoted much study and made important contributions to the determination of the nature of such indefinite compounds as solutions. In another department of physical chemistry, he investigated the expansion of liquids with heat, and devised a formula similar to Gay-Lussac's law of the uniformity of the expansion of gases, while in 1861 he anticipated Thomas Andrews' conception of the critical temperature of gases by defining the absolute boiling-point of a substance as the temperature at which cohesion and heat of vaporization become equal to zero and the liquid changes to vapor, irrespective of the pressure and volume.