Free NEET Chemistry multiple-choice questions on Shapes of Orbitals. Attempt each question and reveal the answer with a full explanation.
The number of radial nodes in 4s and 3p orbitals are respectively: 3, 1 4, 3 3, 2 4, 2 Which of the following is the correct representation of the radial probability distribution for a 1s orbital? A curve starting from zero, reaching a peak, and then tailing off. A straight line increasing with radius. A curve starting from a high value at the nucleus. A sine wave. The number of angular nodes for a d z 2 orbital is: 2 0 1 3 The number of nodal planes in a d xy orbital is: 2 1 0 3 Which of the following plots represents the radial probability distribution ( 4 h r 2 h 2 ) for a 1s orbital? A curve starting from the origin, reaching a maximum, and then decreasing to zero as r increases A curve starting from a maximum value at the nucleus and decreasing exponentially A curve with one node before reaching its maximum A horizontal line The node present in the 2p z orbital is located at: The xy plane The z axis The xz plane The yz plane The probability of finding an electron in the d xy orbital is non-zero in: The regions at 45 to the x and y axes Along the x and y axes Only the xz plane Only the yz plane Which of the following orbitals has two spherical nodes? 3s 2s 3p 4d Which of the following describes the shape and orientation of the d xy orbital? Four lobes lying in the xy plane between the x and y axes. Four lobes lying along the x and y axes. Two lobes lying along the z axis with a ring in the xy plane. Four lobes lying in the xz plane between the x and z axes. How many nodal surfaces (cones) does a d z 2 orbital have? 2 0 1 3 Which of the following describes the 2p z orbital? Two lobes oriented along the z -axis with a nodal plane in the xy plane. Two lobes oriented along the z -axis with a nodal plane in the xz plane. A spherical shell with one radial node. Four lobes in the yz plane. The number of radial nodes in a 5f orbital is: 1 2 3 0 How many nodal planes are present in a d x 2-y 2 orbital? 2 1 0 4 The angular momentum of an electron in a 4d orbital is: 6 2 2 3 0 Which orbital is represented by the radial probability distribution curve having two peaks and one radial node? 2s 1s 3s 2p Which of the following statements about the d x 2-y 2 orbital is correct? The electron density is concentrated along the x and y axes. The electron density is concentrated between the x and y axes. It has a single nodal plane. It is non-directional. The number of angular nodes and radial nodes of a 3p orbital are respectively: 1 and 1 1 and 2 2 and 1 3 and 0 In the plot of R(r) (radial wave function) versus r (distance from nucleus) for a 2p orbital, which of the following is true? The curve starts from the origin ( 0,0 ). The curve starts from a maximum value at r=0 . The curve has one radial node. The curve never reaches zero. Consider the following schematic plots of orbital wavefunction (r) against distance (r) from the nucleus. The figure representing two radial nodes in the orbital is A B C D Which orbital is non-directional in nature? s -orbital p -orbital d -orbital f -orbital Which d -orbital has its electron density distributed along the x and y axes? d x 2-y 2 d xy d z 2 d xz Which of the following is the correct shape of the d x 2-y 2 orbital? Four lobes lying along the x and y axes Four lobes lying between the x and y axes A doughnut shape around the z-axis Two lobes along the z-axis The orbital angular momentum of an electron in an s -orbital is: 0 2 1 2 The number of radial nodes for the 2s orbital is: 1 2 0 3 Identify the incorrect statement from the following. All the five 4d orbitals have shapes similar to the respective 3d orbitals. In an atom, all the five 3d orbitals are equal in energy in free state. The shapes of d xy , d yz and d zx orbitals are similar to each other; and d x 2-y 2 and d z 2 are similar to each other. All the five 5d orbitals are different in size when compared to the respective 4d orbitals. Which of the following is correct for the d z 2 orbital? It has a ring of high electron density in the xy plane. It has four lobes lying in the xz plane. It has four lobes lying in the yz plane. It has no nodes at all.