Because he was creating a book called the Principle of Chemistry and he noticed the pattern in every elment. So he made a table or (chart) called Periodic Table of Elements.
Mendeleev arranged elements in order of increasing Atomic Mass. He found that properties are periodic function of atomic masses. He arranged elements with similar chemical properties together.
Mendeleev made the Periodic Table of Elements when he noticed that there was a pattern in every chemical. He made the table to organize them.
The purpose was to create a rational instrument for the organization of chemical elements.
He answered it the way he did because he thought it would be smart to organize it by atomic numbers.
Dmitri Mendeleev made the Periodic Table of Elements simply to explain atomic masses and atomic numbers. It also explains groups of elements.
Because you touch yourself at night
because hes a thug
Dmitri Ivanovich Mendeleev created a periodic table to sort elements.
Dmitri Mendeleev published the first periodic table in 1869. He built on the work of several other scientists, including Antoine Lavoisier, Johann Dobereiner, Alexandre-Emile Beguyer de Chancourtois, and John Newlands, who had previously studied the best way to classify the elements.
Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, andarrangedthem so that groups of elements with similar properties fell into vertical columns in his table.
Dmitri Mendeleev was a Russian chemist who proposed the Periodic Law. He published the first periodic table of the chemical elements in 1869, based on the increasing atomic masses of the different elements.
The periodic table of elements came into existence while Dmitri Mendeleev was writing his textbook, The Principles of Chemistry. He came up with a way of organizing the elements in order of atomic weight.
He is credited as being the creator of the first version of the periodic table of elements. Using the table, he predicted the properties of elements yet to be discovered.
The periodic table of elements was invented by the Russian chemist Dmitri Mendeleev and nowadays it's the most common way to tabulate the elements.
;0 The way the cards were laid out
Mendeleev found properties of elements to be the periodic function of atomic mass. So, he arranged element that way.
I think that was Dmitri Mendeleev way back in 1869.
Dmitri Ivanovich Mendeleev created a periodic table to sort elements.
Dmitri Mendeleev published the first periodic table in 1869. He built on the work of several other scientists, including Antoine Lavoisier, Johann Dobereiner, Alexandre-Emile Beguyer de Chancourtois, and John Newlands, who had previously studied the best way to classify the elements.
Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, andarrangedthem so that groups of elements with similar properties fell into vertical columns in his table.
mendelev arranged the elements in the periodic table in the asending order of the mass number of elements.
His table was sorted by atomic mass, not atomic number. (the way today's periodic table is sorted) Mendeleev was almost right, but they did not know about protons at the time. (atomic number is the number of protons in an element) There would have been absolutely no way of him figuring out they were related to atomic number if he didn't even know about atomic number
When Mendeleev's periodic table was devised, some elements hadn't been discovered yet. Therefore, there had to be gaps in it or the table would be rendered incorrect. The rule of similarities states that the elements within a specific period/column are similar in a way and have the same number of electrons in the outer shell. E.g. Period 1 (alkali metals) react strongly with both air and water, have to be stored in oil, and are very alkali, hence the name. Mendeleev used this rule to construct the periodic table. The amazing thing is, he guessed where elements were missing and left gaps. He even estimated their atomic masses! In short, Mendeleev's periodic table had some bits missing. (e.g. technetium, discovered in 1936, a whole 65 years after Mendeleev's table was devised in 1871) P.S. It's Mendeleev, not Mendeelev.
the samepattern for how many protons all elements have to they are all factors of each other. That is why the periodic table is set up the way it is in that awkward shape