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Who was left the blanks in his peri...

Who was left the blanks in his periodic table for some undiscover elements ?

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Mendaleev.
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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS -THE PERIODIC TABLE -CREATIVE QUESTIONS FOR NEW MODEL EXAMINATION (SECTION -I)
  1. How many groups are there in mendeleev 's peridic table ?

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  2. How many periods are there in the mendeleev 's periodic table ?

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  3. Who was left the blanks in his periodic table for some undisc...

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  4. Write similar elements to eka-boron , eka aluminum and eka - sill...

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  5. "The placement of elements in Mendeleev 's periodic table helped ...

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  6. Equivalent weight xx valency =

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  7. The anomalous series of elements of mendeleev's periodic table ...

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  8. Name of the 101^(th ) element.

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  9. What is called by the number of postitive charges in an atom ?

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

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  11. Who classified elements according the their atomic numbers ?

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  12. z' indicates

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

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

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

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

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

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

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  19. ""(21 ) Sc : 1s^(2 ) 2s ^(2) 2p ^(6) 3s^(2)3p ^(6 ) 4s ^(2) 3d^(...

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

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