He left blank spaces in the Periodic Table in the correct grouping and period that is where the newly discovered elements were placed.
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.
The gaps in the first periodic elements described those elements which were not discovered at that time. Eg-silicon,germanium etc
3
Independently by Dmitri Mendeleev and Lothar Meyer in 1869
the large 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.
Mendeleev left gaps for undiscovered elements. He predicted their properties which were found to be accurate later.
The gaps in the first periodic elements described those elements which were not discovered at that time. Eg-silicon,germanium etc
Mendeleev was the inventor of the Periodic Table. He organized all the known elements into the periodic table based on atomic number. He was also able to predict the existence of elements that had not yet been discovered based on gaps in the table he created. Based on observations of other elements in the groups he was also able to predict the characteristics of these unknown elements as well. NICE! dude
3
True.
Because there were gaps in the periodic table, which he invented. Unlike other scientist of the time who tried to make the elements fit theircategorising system, such as Newlands and his law of octaves, Mendeleev came to the conclusion that they had not discovered all the elements as he noticed patterns that allowed you to categorise elements if you left gaps that undiscovered elements could fill.
Independently by Dmitri Mendeleev and Lothar Meyer in 1869
I believe the correct answer is he was able to predict the existence of yet undiscovered elements, due to the gaps. For instance, I believe germanium was one of the elements undiscovered in the table, its placeholder was called ekasilicon.
Dmitri Mendeleev
the large gaps
the large gaps