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Name two elements you would expect to sh...

Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?

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Name of elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?

(a) Name two elements you would expect to show chemical reactions similar to sodium. What is the basis of your choice? (b) Arrange the elements present in that group in the increasing order of reactivity. Give reason.

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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. Why do you think the noble gases are placed in a separate group?

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

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

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

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

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

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

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

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

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

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

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  12. The atom of an element has electronic configutation 2,8,7. (a) What ...

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  13. The positions of three elements A,B and C in the periodic table are sh...

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  14. The positions of three elements A,B and C in the periodic table are sh...

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

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

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  17. In the modern periodic table calcium (atomic number 20) is surrounded ...

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  18. Compare and contrast the arrangement of elements in Mendeléev’s Period...

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  19. Rahul is a ten year old boy. He had purchased a packet of potato chips...

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  20. Mr. Kumar runs a small garment making factory in a premises having a r...

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