How could the Modern Periodic Table remove various anomalies of Mendeleev's Periodic Table?
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Answer
Various anomalies of Mendeleev’s Periodic Table removed as follows in the Modern Periodic Table:
→ Elements are arranged in the increasing order of their atomic number in Modern Periodic Table, thus there was no need for keeping more than one element in one slot.
→ In Modern Periodic Table there was no problem of the place of isotopes, as isotopes have same atomic mass with different atomic numbers.
→ Elements having same valence electron are kept in same group.
→ Elements having same number of shells were put under the same period.
→ Position of hydrogen became clarified in as it is kept in the group with the elements of same valence electrons
* 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.