How could the modern periodic table remove the various anomalies of mendleèv's periodic table?
Answers
* It have dealt with isotopes of the element. That the isotopes of the element are treated as the same element as almost their properties are similar.
* Hydrogen has been given a separate place in the modern periodic table.
* The elements not found at that time (Mendeleev's time) are now found and replaced the the gaps named Eka aluminum,Eka silicon ,etc,.
* The elements we're arranged on the increasing atomic number.
* Metals,Non-metals are separated in different groups.
* Metalloids are separated from metals and Non-metals with a dark zigzag line.
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Answer:
Explanation:
(i) The Modern Periodic Table was classified on
the basis of atomic number. All isotopes of the
same elements have different masses but same
atomic number. Therefore, they occupy the same
position in the Modern Periodic table.
(ii) When elements are arranged according to their
atomic numbers, the anomaly regarding certain
pairs of elements in Mendeleev’s Periodic Table
disappears e.g. atomic number of cobalt and
nickel are 27 and 28 respectively. Therefore,
cobalt will come first and then nickel, although
atomic mass of cobalt is greater.