A) The shapes of the first three orbitals are similar but that of the fourth and fifth orbitals are different.
B) The shapes of all five d-orbitals are similar
C) The shapes of the first four orbitals are similar but that of the fifth orbital is different
D) The shapes of all five d-orbitals are different
Correct Answer: C
Solution :
The shape of fifth d-orbital is different. First four orbitals contain 4 lobes, but fifth orbital contains 2 lobes. The lobes of \[{{d}_{xy}}\] orbital lie between x and y axes. The lobes of \[{{d}_{yz}}\] and \[{{d}_{xz}}\] also lie between y, z and x, z axes respectively. Four lobes of \[{{d}_{{{x}^{2}}-{{y}^{2}}}}\] lie along x and y axes while 2 lobes of \[d{{z}^{2}}\] lie along z axis.
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