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The atomic numbers of the elements Na, M...

The atomic numbers of the elements `Na, Mg, K` and `Ca` are `11,12,19` and `20` respectively. The element having the largest atomic radius is :

A

`Mg`

B

`Na`

C

`K`

D

`Ca`

Text Solution

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The correct Answer is:
C
NA
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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. The element which has the maximum number of valence electrons is:

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  2. The correct increasing order of the atomic radii of the elements oxyge...

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  3. The atomic numbers of the elements Na, Mg, K and Ca are 11,12,19 and 2...

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  4. Which of the following are the correct characteristics of isotopes of ...

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  5. The correct formula of the oxide of Eka-aluminium element predicted by...

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  6. The element which can form an acidic oxide should be the one whose ato...

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  7. The element which forms a basic oxide has the atomic number of:

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  8. Which one of the following does not increase while moving down the gro...

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  9. On moving from left to right in a period in the periodic table, the si...

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  10. Which of the following set of elements is written in order of their in...

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  11. The atomic numbers of the three elements X,Y and Z are 2,6 and 10 resp...

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  12. An atom has the electronic structure of 2,7 (a) What is the atomic n...

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  13. Consider the following elements, ""(20)Ca, ""(8)O, ""(18)Ar, ""(16)S...

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  14. In the each of the following pairs, choose the atom having the bigger ...

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  15. The atomic numbers of three elements A,B and C are given below: Elem...

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  16. An element X belongs to 3rd period and group 2 of the periodic table. ...

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  17. The following diagram shows a part of the periodic table in which the ...

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  18. An element X is in group of the periodic table: (a) What will be the...

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  19. An element Y is in second period and group 16 of the periodic table: ...

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  20. (a) An element X has mass number 40 and contains 21 neutrons in its at...

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