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The electronic configuration of an eleme...

The electronic configuration of an element is `1s^(2)2s^(2)2p^(6)3s^(2)3p^(3)`. The atomic number of the element which is just below the above element in the periodic table is

A

49

B

31

C

34

D

33

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The correct Answer is:
D
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NARAYNA-PERIODIC TABLE -All Questions
  1. The following are some statements about Mendeleeff's periodic table ...

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  2. Which of the following pairs of atoms have same number of electrons in...

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  3. The electronic configuration of an element is 1s^(2)2s^(2)2p^(6)3s^(2)...

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  4. The element present in the IIIA group and 3 period in the periodic tab...

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  5. The long form of periodic table is nothing but just a graphical repres...

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  6. In the sixth period, the orbitals being filled are

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  7. The number of valence electrons that can be present in the second elem...

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  8. At room temperature liquid metal and liquid non-metals are

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  9. Which of the following contains same number of elements

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  10. The statement that is false regarding the long form the periodic tabl...

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  11. Covalent bond length of chlorine molecule is 1.98A^(0). Covalent radiu...

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  12. In which of the following pairs, the first atom or ion is not large th...

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  13. The covalent radius of hydrogen is 0.37A^(0). The bond length in H(2) ...

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  14. In the isoelectronic species the ionic radii of N^(3-), O^(2-), F^(-) ...

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  15. Chloride ion and chlorine atom have

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  16. The covalent and Van der wall's radii of chlorine respectively are

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  17. The atomic radii of two elements "X" and "Y" are 0.72 A^(0) and 1.6A^(...

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  18. Among O,C,F,Cl and Br the increasing order of atomic radii is

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  19. The ionic size decreases in the order

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  20. The group of elements with highest second ionisation energy is

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