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Topic Question Set

Q 1 :    

The number of radial node/s for 3p orbital is:             [2024]

  • 3

     

  • 2

     

  • 1

     

  • 4

     

(3)         

              Number of radial nodes = n-l-1.

               For 3p orbital, n=3, l=1

               Number of radial nodes = 3 - 1 - 1 = 1 

 

Q 2 :    

Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect? (Bohr’s radius is represented by a0)           [2025]

  • The probability density of finding the electron is maximum at the nucleus.

     

  • The electron can be found at a distance 2a0 from the nucleus.

     

  • The 1s orbital is spherically symmetrical.

     

  • The total energy of the electron is maximum when it is at a distance a0 from the nucleus.

     

(4)

|ψ|2 → max at r=0 (nucleus)

|ψ|2≠0 at any point

E=-13.6 Z2n2,  Emax=0 at n=∞