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ra1l [238]
3 years ago
6

Similarity between modern and mendeleev periodic table.

Chemistry
1 answer:
creativ13 [48]3 years ago
6 0

Similarities between Mendeleev's periodic and Modern periodic table: Elements are arranged in groups and periods. Elements with similar properties are placed in the same group. Metals and non-metals are placed separately.

The major difference is that the elements in Mendeleev's periodic table were arranged by atomic mass and the modern periodic table arranges elements by atomic number. Of course as elements are constantly being discovered there were significantly fewer elements in Mendeleev's periodic table.

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