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How is the problem regarding the positio...

How is the problem regarding the position of cobalt("_59CO) and nickel ("_NI)` in Mendeleev's periodic table resolved in Modern periodic table ?

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CHETANA PUBLICATION-Periodic Classifications of ELements-EXAMPLE
  1. On going through the Modern periodic table (fig. 2.1) it is seen that ...

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  2. On going through the Modern periodic table (fig. 2.1) it is seen that ...

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  3. How is the problem regarding the position of cobalt("59CO) and nickel ...

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  4. How did the position of frac(35)(17)Cl and frac(37)(17)Clget fixed in ...

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  5. Can there be an element with atomic mas 53 or 54 in between the two el...

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  6. How are isotopes of different elements placed in the Modern peridic Ta...

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  7. What should be the position of Hydrogen in the Modern periodic Table?W...

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  8. How do you calculate valency of an element from its electronic configu...

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  9. What is the valency of elements with atomic number 8,14,17 and 20 ?

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  10. What was the basis of Mendeleev's classification ?

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  11. What type of relationship of elements was examined by mendeleev?

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  12. How many elements were known when Mendeleev started his work?

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  13. What is meant by periodicity according to Mendeleev?

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  14. What is Mendeleev's Periodic law?

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  15. State the law on which modern periodic table is based

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  16. How many groups are there in the modern periodic table?

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  17. What is the number of valence electrons in an element of group 1 and g...

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  18. What is the trend in the variation of valency while going down a group...

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  19. Which pair of elements do you think will have similar properties? : So...

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  20. State the merits of Mendeleev's periodic table.

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