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Structure of At...

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  • Question 1
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    Which is a possible set of quantum numbers for a valence unpaired electrons in ground state atom of phosphorus (Z = 15)?

     

  • Question 2
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    For a multi-electron atom, set of quantum numbers is given as

    2,0,0,1/2 ; 2,0,0,-1/2

    Q. Thus, the next higher allowed set of n and / quantum numbers for this atom in its ground state is

  • Question 3
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    Magnetic moments of the following isoelectronic species (24 electrons) are in order

  • Question 4
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    The orbital angular momentum for a d-orbital electron is given by

  • Question 5
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    The number of radial nodes in 3s and 2p respectively are

  • Question 6
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    A hydrogen like species in fourth orbit has radius 1.5 times that of Bohr's orbit. In neutral state, its valence electron is in

  • Question 7
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    Following suborbits with values of n and l are given

    Q. Increasing order of energy of these suborbits is

  • Question 8
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    The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is

    [JEE Main 2013]

  • Question 9
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    For Cr(24), (EC) : [Ar] 4s1 3d5 The number of electrons with l = 1 to l = 2 are respectively

  • Question 10
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    Last filling electron in lanthanides find place in 4f-orbital. Which of the following sets of quantum number is correct for an electron in 4f orbital?

  • Question 11
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    Which orbital gives an electron, a greater probability being found close to the nucleus?

     

  • Question 12
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    In the following pair, each has two orbitals I and II. Select the ones in which II experiences larger effective nuclear charge than l

     

  • Question 13
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    ‘Hartree’ is the atomic unit of energy and is equal to

     

  • Question 14
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    Which of the following electronic transitions requires that the greatest quantity of energy be absorbed by a hydrogen atom ?

     

  • Question 15
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    The quantum number which specifies the location of an electron as well as energy is      

  • Question 16
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    Quantum Numbers are solutions of _____________

  • Question 17
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    Which quantum numbers gives the shell to which the electron belongs?

  • Question 18
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    Choice the correct combination of elements and column I and coloumn II  are given as option (a), (b), (c) and (d), out of which ONE option is correct.

    Q. Match the entries in Column I with correctly related quantum number(s) in Column II 

     

  • Question 19
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    Direction (Q. Nos. 19 and 20) This section contains 2 questions. when worked out will result in an integer from 0 to 9 (both inclusive)

    Q.   Bond order of 1.5 is shown by

  • Question 20
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    The maximum number of electrons that can have principal quantum number, n = 3 and spin quantum number,

     

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