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Use Mendeléev’s Periodic Table to predic...

Use Mendeléev’s Periodic Table to predict the formulae for the oxides of the following elements:
K, C, AI, Si, Ba.

Text Solution

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K is in group 1. Therefore, the oxide wll be `K_(2)O`
C is the group 4. Therefore, the oxide will be `CO_(2)`.
Al is in group 4. Therefore, the oxide will be `Al_(2)O_(3)`
Si is in group 4. Therefore, the oxide will be `SiO_(2)`
Ba is in group 2. Therefore, the oxide will be BaO.
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NCERT-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. What were the limitations of Döbereiner’s classification?

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  2. What were the limitations of Newlands’ Law of Octaves?

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  3. Use Mendeléev’s Periodic Table to predict the formulae for the oxides ...

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  4. Besides gallium, which other elements have since been discovered that ...

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  5. What were the criteria used by Mendeléev in creating his Periodic Tabl...

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  6. Why do you think the noble gases are placed in a separate group?

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  7. How could the Modern Periodic Table remove various anomalies of Mendel...

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  8. Name two elements you would expect to show chemical reactions similar ...

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  9. Name (a) three elements that have a single electron in their outermo...

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  10. (a) Lithium, sodium, potassium are all metals that react with water to...

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  11. In the Modern Periodic Table, which are the metals among the first ten...

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  12. By considering their position in the Periodic Table, which one of the ...

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  13. Which of the following statements is not a correct statement about the...

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  14. Element X forms a chloride with the formula XCl(2), which is a solid w...

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  15. Which element has (a) two shells, both of which are completely filled...

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  16. (a) What property do all elements in the same column of the Periodic T...

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  17. An atom has electronic configuration 2, 8, 7. (a) What is the atomic n...

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  18. The position of three elements A, B and C in the Periodic Table are sh...

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  19. Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to...

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  20. How does the electronic configuration of an atom relate to its positio...

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