Page 1 :
(nl and m, @ all the four quantum numbers, 65. Any p-orbital can accommodate up to:, (a) 4 electrons, (b) 2 electrons with parallel spins, (c) 6 electrons, @ 2 electrons with opposite spins, 66. How many electrons can fit into the orbitals that comprise, the 3rd quantum shell 1 = 3?, , (a) 2 (b) 8, (c) 18 (d) 32, 67. The total number of orbitals in a principal shell is:, (a) 2 (b) n?, (©) 2? (d) 3n?, , 68. Two electrons in K-shell will differ in:, (a) principal quantum number, (b) spin quantum number, (c) azimuthal quantum number, (d) magnetic quantum number, 69. Which one of the following orbitals has the shape of a, baby-boother ?, , (a) diy (b) doy, (c) dz (d) p 'y, 70. Which one of the following represents an impossible, arrangement?, nimies n lms, @ 3 2 2 12 () 4 0 0 12-~_, () 3 2 -3 12 @-5 3 0 12, , 71. Which of the following sets of quantum numbers is correct, foran electron in 4f-orbital?, (a) n=4,1=3,m=4+4,s=+V/2, () n=4,/=4,m=—-4,s=-V/2, (0) n=4,1=3,m=+1s=4+1/2, @) .n=3,/=2,m=-2,s=+V/2, , 72. In any subshell, the maximum number of electrons having, same values of spin quantum number is :, , (a) J1(+1) (b)/+2, (+1 (d) 41 +2, , [Hint : Number of electrons with same spin, 1, , 3 Total no. of electrons, 1, , 5x2@Ql4+)=QI+D], , 73. Which of the following represents the correct set of four, quantum numbers of a 4d-electron?, (@) 4,3,242 (b) 4,2, 1,0, ©) 4,3,-2,41/2 (d) 4,2.L-2, , 74, Values of ‘magnetic orbital quantum number for an electron, of M-shell can be : ,, (a) 0, 1,2, ©)0,1,2,3, , (b)-2,-1,0,+1,+2, (@)-1,0,4+1, , 75. Correct set of four quantum numbers for the outermost, , electron of rubidium (Z = 37) is:, , (a) 5,0,0, 1/2 (b) 5, 1,0, 1/2, (c) 5,1, 1, 1/2 (d) 6,0,0,1/2, 76. Which onc of the following subshells is spherical in shape?, (a) 4s (b) 4p, (c) 4d (d) 4f, 77. Total number of m values for n = 4 is:, (a) 8 (b) 16, (c) 12 (d) 20, , 78. Whatis the total number of orbitals in the shell to which the, g-subshell first arise?, (a) 9 (b) 16, (©) 25 (d) 36, [Hint : For g-subshell, /= 4, ~. It will arise in 5th shell,, Total number of orbitals in Sth shell = n? = 25], 79. Which of the following statements is not correct for an, electron that has quantum numbers n = 4 and m= 2?, (a) The electron may have the q. no. /=+ 1/2., (b) The electron may have the q. no. /= 2., (c) The electron may have the q. no. / = 3., (d) The electron may have the q. no. /= 0, 1, 2, 3., 80. The angular momentum of an electron depends on:, (a) principal quantum number, (b) azimuthal quantum number, (c) magnetic quantum number, (d) all of the above, 81. The magnetic quantum number for valency electron of, sodium atom is:, (a) 3 (b) 2, (© 1 (d) zero, 82. The shape of the orbital is given by:, (a) spin quantum number, (b) magnetic quantum number, (c) azimuthal quantum number, (d) principal quantum number, 83. The energy of an electron of 2p y orbital is:, (a) greater than 2p, orbital, (b) less than 2p, orbital, (c) equal to 2s orbital, (d) same as that of 2p, and 2p, orbitals, 84. Given the value of Rydberg constant is 107 m7! the wave, number of the last line of the Balmer series in hydrogen, spectrum will be : [NEET-1 (Physics) 2016], (a) 2.5x 107m! (b) 0.025 x 104 m7!, (©) 0.5% 107 m™ (@ 0.25107 m, [Hint : Series limit for Balmer series :, , _ 2, ¥ -r'(4-4) ier =8=025x10!m™