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Write the increasing order of energies o...

Write the increasing order of energies of 4s,3p,4p and 3d.

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For 4s,n=4,l=0,(n+l)=4
For 3p,n=3,l=1,(n+l)=4
For 4p,n=4,l=1,(n+l)=5
For 3d,n=3,l=2,(n+l)=5
`rArr 3plt4slt3dlt4p` increasing order
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ALLEN-QUANTUM NUMBER & PERIODIC TABLE-J-ADVANCED EXERCISE
  1. Write the increasing order of energies of 4s,3p,4p and 3d.

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  2. Increasing order of ionic size : N^(3+),Na^(-),F^(-),O^(2-),Mg^(2+)

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  3. Arrange the following in increasing order of basic strength : MgO,Sr...

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  4. The statement that is not correct for the periodic classification of e...

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  5. Ca^(2+) has a smaller ionic radius than K^(oplus) because it has "………"...

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  6. The basic nature of hydroxides of group 13 (III-A) decreases progressi...

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  7. Moving from right to left in a periodic table, the atomic size is :

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  8. The increasing order of electronegativity in the following elements :

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  9. One element has atomic weight 39. Its electronic configuration is 1s^(...

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  10. The number of paired electrons in oxygen atom is :

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  11. The decreasing size of K^(+),Ca^(2+),Cl^(-) & S^(2-) follows the order...

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  12. Which of the following has the maximum number of unpaired electrons ?

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  13. The incorrect statement Among the following is A)The first ionisation...

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  14. Li^(+),Mg^(2+),K^(+),Al^(3+) (Arrange in increasing order of radii)

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  15. Which one of the following statement (s) is (are) correct?

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  16. The electrons identified by the following quantum numbers n and l: (i)...

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  17. Gaseous state electronic configuration of ntrogen atom can be represen...

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

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  19. Statement-1 : F arom has a less negative electron gain enthalpy than C...

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  20. The correct order of radii is :

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  21. The IE of Be is greater than that of B.

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