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Who classified elements according the...

Who classified elements according the their atomic numbers ?

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Assertion (A) : It is a better way of arranging the elements in the periodic table is according to the increasing atomic number. Reason (R) : This arrangement. according to increasing atomic number eliminated the problem of anomalous series.

A: The properties of elements are the periodic functions of their atomic weights. B: The properties of elements are the periodic functions of their atomic numbers.

VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS -THE PERIODIC TABLE -CREATIVE QUESTIONS FOR NEW MODEL EXAMINATION (SECTION -I)
  1. What is called by the number of postitive charges in an atom ?

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  2. The arrangement of elements elimated the problem of anomalous ser...

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  3. Who classified elements according the their atomic numbers ?

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  4. z' indicates

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  5. Which property of an element is basis in the construction of ...

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  6. How many periods and groups are there in the modern periodic ...

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  7. Match it , {:("1)", "Vertical column ","a)","group"),("2)", "Horio...

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  8. Match it {:("a)s-subshell","1)6 electrons "),("b) p-sunshell ","2) ...

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  9. How many blocks are there in modern peridic table ?

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  10. ""(11)Na :1s ^(2) 2s^(2) 2p ^(6) 3s^(1) this element belongs t...

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  11. ""(21 ) Sc : 1s^(2 ) 2s ^(2) 2p ^(6) 3s^(2)3p ^(6 ) 4s ^(2) 3d^(...

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  12. What is the general outersheell electronic configuration of alkal...

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  13. What is general outershell electronic configuration of Halogen ...

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  14. match the above

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  15. Which statement is wrong ?

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  16. How many elements are there in first period in the periodic tab...

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  17. which block elements are called Lanthanoids / actinoids ?

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  18. match it {:("a)",""(58)Ce-""(71)Lu,"i) Actinoids "),("b)",""(90) ...

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  19. Which block elements are called as transition metals ?

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  20. Which block elements are called the inner transition elements ?

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