when was the first table published?
1869
Periodic table
 Russian chemist Dmitri Mendeleev published the first recognizable periodic table in 1869, developed mainly to illustrate periodic trends of the then-known elements. He also predicted some properties of unidentified elements that were expected to fill gaps within the table.
name of a row in the periodic table The seven rows of the table, called periods what is this table about? It is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties can you name some chemical elements? Hydrogen, oganesson, plutonium what is the atomic number of the first element? Atomic numbers 1 can you name some things that react with this element? Chlorine and fluorine what are some of its isotopes? Deuterium, tritium, protium who was the first to discover it? Henry Cavendish was the first to recognize hydrogen gas, and Antoine Lavoisier gave the element the name hydrogen what precautions does one have to take while dealing with this element? UNANSWERABLE does the table also contain information about metals? Yes where are the metals and nonmetals placed on the table? The seven rows of the table, called periods, generally have metals on the left and nonmetals on the right.
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Periodic table [SEP] Introduction
Numerous synthetic radioisotopes of naturally occurring elements have also been produced in laboratories. The organization of the periodic table can be used to derive relationships between the various element properties, and also to predict chemical properties and behaviours of undiscovered or newly synthesized elements. Russian chemist Dmitri Mendeleev published the first recognizable periodic table in 1869, developed mainly to illustrate periodic trends of the then-known elements. He also predicted some properties of unidentified elements that were expected to fill gaps within the table. Most of his forecasts soon proved to be correct, culminating with the discovery of gallium and germanium in 1875 and 1886 respectively, which corroborated his predictions.