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The atomic number. ~SuperCat
Elements with same property are grouped together. Property can be estimated by its position.
Independently by Dmitri Mendeleev and Lothar Meyer in 1869
What elements are similar to iron in a chemical property on the Periodic Table
it confirmed medeleev's prediction and showed the usedfulness of his table
The atomic number. ~SuperCat
Dmitri Mendeleev
Dmitri arranged elements in rows and columns. According to him, the properties of elements are periodic functions of their atomic weights.
Elements with same property are grouped together. Property can be estimated by its position.
Independently by Dmitri Mendeleev and Lothar Meyer in 1869
It's probably Mendeleev you're after. He came up with the first version of a Periodic Table of the elements, and used this to predict the properties of elements that hadn't been discovered at that time.
the number of protons in the nucleus and the number of electrons in the valence orbital
Before Mendeleev, Dobereiner, De-chancourtis, Newland and Lother Meyers had already given their respective periodic arrangement of elements, but none of the models were accepted as they had many limitations...
atomic no. or basically according to the no. of electrons in their outermost shell whcih reflect the property of individual atom
he based it on his favourite game
He used an atomic mass, and also an atomic mass of units. Therefore he was able to find the pattern. I got this answer off of Mr. Kebblers class.
No; that was Dmitri Medeleev, in 1869.