Answer: The angular node can be defined as the specific planar area around the nucleus of an element where there are null chances of finding an electron. The Angular Nodes depend upon the azimuthal quantum number. The total number of angular nodes found in the 4d orbital is two.
A Radial Node can be defined as the spherical area near the element’s nucleus where there is a very low probability of finding an electron. The radial nodes depend entirely upon both the Azimuthal and principal quantum numbers. An increase in the principal Quantum Number will increase the number of Radial nodes. The total number of Radial nodes in the 4d orbital is one.