mendeleev organised the table according to atomic number, which is the same as the number of protons. when the electrons started a newshell he started a new row
Mendeleev arranged the elements in order of their increasing atomic masses. He placed them in the groups and periods according to similar chemical properties.
your question does not make sense. your question does not make sense.
He created the first perodic table and organized the element in the periodic table by atomic mass
Because the table is designed so that elements in the same column tend to have similar properties. The gaps at the top of the table are there to make the elements in vertical columns all have the same amount of outer-shell electrons.
Dmitri Mendeleev figured out that there were missing elements on his periodic table. Using periodic trends and averaging numbers, he could make pretty accurate predictions about elements not discovered yet. Mendeleev predicted four: * ekaboron (modern day scandium) * ekaaluminium (modern day gallium) * ekamanganese (modern day technetium) * ekasilicon (modern day germanium)
Mendeleev placed his elements in order of increasing atomic mass. He placed elements with similar chemical properties in the same groups or families. He realized that there were some gaps in the table where an undiscovered element should go and made predictions about those elements before they were found.
your question does not make sense. your question does not make sense.
No, Dmitri Mendeleev in Russia developed the first periodic table.
1869
He is the founder of the periodic table. He arranged the elements according to the atomic masses. Few changes are made in his periodic table to make the modern periodic table.
Lothar meyer
Mendeleev was working on a text book to use with his students.
Dmitri Mendeleev developed the first periodic table. But the modern table was developed by Henry Moseley.
The Russian chemist Dmitri Mendeleev was the first scientist to make a periodic table similar to the one used today.
He invented the periodic table. You must know what that means; he was the father of basic chemistry. Actually, he didn't discover the periodic table. He just arranged the only elements he had available in his day (not a lot) and arranged them based on patterns of # of protons, electrons, reactivity, etc. He didn't have an in-depth knowledge yet of electron configuration ;however, his "guess" turned out to have so many great implications that we now use his invention everyday everywhere.
There have been two make ups of the periodic table so far Mosley made the first one but was overtaken by Dimitri Mendeleev's form, which we use today.
Dmitri Mendeleev was the first scientist to create the periodic table
Mendeleev worked also in spectroscopy, ethanol-water system, capillarity, petroleum chemistry.