Question

name two elements whose atomic weights were corrected on the basis of their position in mendeleev's periodic table

Answer 1

two elements whose atomic weights were corrected on the basis of their position in mendeleev's periodic table are:-

1.gold

2.platinium

Answer 2

Gold and platinum are the two elements whose "atomic weights" were corrected on the basis of their position in "Mendeleev's periodic table".

Explanation:

• Mendeleev's periodic table's main aim was to group all the elements by the basis of some common characteristics.

• His periodic table turned out to be one of the greatest ever achievements in the expansive field of chemistry.

• His table had the feature for predicting errors of the atomic masses of various elements like beryllium which was corrected from the mass of 13.5 to 9.

• The exact atomic mass of rare elements like platinum & gold were also corrected.

• Gold is a monoisotopic element and the atomic weight of gold is 196.96657  

• Platinum is one of the least reactive metals the atomic weight of platinum is 195.084(9).

• This was achieved by appropriately placing the set of these elements according to their recurring and similar properties.

• Earlier these elements had different positions which were changed after the correction of atomic masses in "Mendeleev's periodic table".

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