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In sodium atom on 3s electron the screen...

In sodium atom on `3s` electron the screening is due to:

A

`3s^(2),3p^(6)`

B

`4s^(1)`

C

`1s^(2),2s^(2),2p^(6)`

D

`3s^(1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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RESONANCE ENGLISH-PERIODIC TABLE & PERIODICITY-Advanced Level Problems
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  2. Which of the following is correct prder of Z(eff):

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  3. In sodium atom on 3s electron the screening is due to:

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  4. Which of the following elements can have negative oxidation states.

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  5. What is correct order of reducing capacity.

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  6. Intert pair effect is observed in elements of which block:

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  7. Which of the following order of radii is correct?

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  8. The lanthanide contraction refers to:

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  9. Which of the following statement is correct with respect to the proper...

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  10. Which group of atoms have nearly same atomic radius.

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  11. The incorrect order of radius is:

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  12. The second ionisation enthalpies of elements are always higher than th...

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  13. A large difference between the third and fourth ionization energies in...

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  14. The ionization energy will be higher when the electron is removed from...

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  15. The atomic number of V,Cr, Mn and Fe are respectively 23,24,25 and 26....

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  16. For which of the following species 2^(nd) IE lt 1^(st) IE

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  17. With reference to 1^(st) IP which are correct. (a) Li lt C (b) O lt ...

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  18. Values of 1^(st) four ionisation energies (kJ//mol) of an element are ...

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  19. Which one of the following statement is correct?

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  20. For magnitude of eletron gain enthalpy of chalocogens and halogens, wh...

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