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The atomic particle whose number in the ...

The atomic particle whose number in the atoms of an element always remains the same and which forms the real basis for the modern classification of elements is:

A

electron

B

proton

C

neutron

D

meson

Text Solution

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The correct Answer is:
B
NA
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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. An element X forms an oxide X(2)O(3). In which group of Mendeleev's pe...

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  2. The modern periodic table was prepared by

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  3. The atomic particle whose number in the atoms of an element always rem...

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  4. The atomic masses of three elements X,Y and Z having similar chemical ...

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  5. In the following set of elements one element does not belong to the se...

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  6. In the following set of elements, one element does not belong to the s...

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  7. Can the following groups of elements be classified as Dobereiner's tri...

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  8. Consider the following elements: Na, Ca, Al, K,Mg, Li (a) Which of...

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

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  10. Consider the followng elements: Ca, Cl, Na, I, Li, Ba Sr, K, Br Se...

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  11. Mendeleve predicted the exitence of certain elements not known at that...

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  12. A part of the early classification of elements has been given below: ...

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  13. (a) Explain why: (i) All the elements of a group have similar chemic...

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  14. (a) How does the electropositive character of elements change on going...

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  15. (a) What is the fundamental difference in the electronic configuration...

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  16. (a) What is the usual number of valence electrons and valency of group...

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  17. (a) What is the main characteristic of the last elements in the perio...

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  18. (a) How does the atomic size vary on going down form top to bottom in ...

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  19. (a) How does the tendency to lose electrons change as we go down in gr...

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  20. (a) Why does the side of the atoms progressively become smaller when w...

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