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What were the limitations of Mendeleev's periodic table?
- a)The position of Hydrogen was uncertain
- b)There was no space for isotopes of elements
- c)Atomic masses do not increase in a regular manner in going from one element to next.
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
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What were the limitations of Mendeleev's periodic table?a)The positio...
LIMITATIONS OF Mendeleev's Periodic Table :
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- Position of Hydrogen => Position of hydrogen in the periodic table is Uncertain Because hydrogen is placed in 1 A group with Alkali metals.
- Position of isotopes => isotopes haven't been given separate place in periodic table.
- Cause of periodicity => Mendeleev could not explain the cause of periodicity.
- Separation of similar elements => some dissimilar elements have been placed together
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What were the limitations of Mendeleev's periodic table?a)The positio...
Limitations of Mendeleev's periodic table:
1. The position of Hydrogen was uncertain:
Mendeleev placed hydrogen in Group I of his periodic table, as it has similar properties to the alkali metals. However, hydrogen also exhibits properties similar to halogens. This uncertainty in its placement was a limitation of Mendeleev's periodic table.
2. There was no space for isotopes of elements:
Mendeleev's periodic table was based on atomic masses, and isotopes of elements were not considered. This led to a limitation as isotopes have the same number of protons but different numbers of neutrons, resulting in different atomic masses.
3. Atomic masses do not increase in a regular manner:
In some instances, the atomic masses of elements did not increase in a regular manner as one moved from one element to the next in Mendeleev's periodic table. This irregularity in atomic masses was a limitation as it did not follow a consistent pattern.
Overall, the limitations of Mendeleev's periodic table, such as the uncertainty in the position of hydrogen, the lack of space for isotopes, and irregularities in atomic masses, highlighted the need for further refinements and improvements in the periodic table.
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What were the limitations of Mendeleev's periodic table?a)The position of Hydrogen was uncertainb)There was no space for isotopes of elementsc)Atomic masses do not increase in a regular manner in going from one element to next.d)All of the aboveCorrect answer is option 'D'. Can you explain this answer?
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