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The positions of three elements A,B and ...

The positions of three elements `A,B` and `C` in the periodic table are shown here
(a) State whether `A` is a metal or non-metal?

State whether `C` is more reactive or less reactive than `A`
(c) Will `C` be larger or smaller in size than `B`?
(d) Which type of ion, cation or anion, will be formed by element `A`?

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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. The atom of an element has electronic configutation 2,8,7. (a) What ...

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

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

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

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

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

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

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

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

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  10. Raghav is a student of class X who was trying to convert the groundnut...

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  11. Reshma is the student of class X in a city school. One day she was sit...

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  12. Given alongside is a part of the periodic table: As we move horizont...

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  13. How would the tendency to gain electrons change on moving from left to...

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  14. How would the tendency to lose electrons change as we go from left to ...

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  15. What property do all elements in the same column of the periodic table...

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  16. What property do all the elements in the same group of the periodic ta...

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  17. (a) What is the number of valence electrons in the atoms of first elem...

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  18. State whether the following statement is true of fals: On going down...

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  19. How does the valency of elements vary is going down a group of the per...

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  20. Name the element which is in: (a) first group and third period: (b) ...

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