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The scientist who made maximum contribut...

The scientist who made maximum contribution towards periodic table was

A

Thomson

B

Bohr

C

Sommerfeld

D

Mendeleeff

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BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. Choose the correct answer for the following matching :

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  2. Elements belonging to the same period have

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  3. The scientist who made maximum contribution towards periodic table was

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  4. Which of the following sets of atomic numbers corresponds to the atomi...

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  5. Atomic numbers of last elements of 'd' block and p block of incomplete...

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  6. The outermost shell of a representative element contains x electrons a...

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  7. Which of the following statements about the modern periodic table are ...

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  8. Choose the right properties of periodic table. (a) Atomic radius incr...

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  9. Which of the following species does have electrons equal to 18 ? (a) K...

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  10. Pick out the correct statements about chlorine atom. (a) Chlroine is ...

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  11. What are the elements that belonged to 18th (or) '0' group ? (a) Heliu...

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  12. Electronic configuration from ns^2 np^1 to np^2 np^6 are called

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  13. 1 pm = …………..

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  14. block elements are called as lanthanides and actinides in modern perio...

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  15. "The law states hat the physical and chemical properties of the ...

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  16. VI A group elements are called chalcogens. This is because

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  17. The general electronic configuration of d-block elements is

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  18. The size of anion is more than neutral atom. This is due to

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  19. Which of the following is correct with respect to size ?

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  20. M^+ + IE2 =M^(+2)(g)+e^- This represents

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