The gaps in the first periodic elements described those elements which were not discovered at that time. Eg-silicon,germanium etc
Undiscovered elements.
existence of more elements - he left gaps
?
Mendeleev was able to predict the properties of the elements that were not discovered at that time. He left gaps for these elements in his Periodic Table.
This scientist is the Russian chemist Dimitri Mendeleev.
He could predict other elements because there was an obvious gap, but he couldn't predict the noble gases because he didn't realize that there was going to be an 18th group since none of them were yet discovered. When he first started organizing the periodic table, the pattern still made sense even without the noble gases.
elements
In 1869, he published the greatest of his works, Principles of Chemistry, where he formulated his famous periodic table, translated into many languages ​​and that was a textbook for many years.
Mendeleev was able to predict the properties of the elements that were not discovered at that time. He left gaps for these elements in his Periodic Table.
This scientist is the Russian chemist Dimitri Mendeleev.
He could predict other elements because there was an obvious gap, but he couldn't predict the noble gases because he didn't realize that there was going to be an 18th group since none of them were yet discovered. When he first started organizing the periodic table, the pattern still made sense even without the noble gases.
elements
Mendeleev's published the periodic table in 1869.
In 1869, he published the greatest of his works, Principles of Chemistry, where he formulated his famous periodic table, translated into many languages ​​and that was a textbook for many years.
yes it is true. that is how the periodic table was established. ----
Dmitri Mendeleev first periodic table is called Mendeleev's periodic table. Elements are arranged according to atomic mass.
The first element of the Mendeleev's periodic table is hydrogen (H).
In the yer 1869, Mendeleev published the periodic table.
Mendeleev's published the periodic table in 1869.
Hydrogen is the first chemical element in the Periodic Table of Mendeleev.