A node is a point where the electron probability is zero. For a given orbital there are two types of nodes (i) Radial nodes (ii) Angular nodes Radial node is a spherical surface where the probability of finding an electron is zero. Number of radial nodes =n−l−1 n= principle quantum number l= angular (or) azimuthal quantum number Angular node is a plane that passes through the nucleus. Number of angular nodes =l For 6pz orbital n=6,l=1 Angular node =l=1 Radial nodes =n−1−1 =6−1−1=4 shape of pz orbital
So, orbital with 4 radial and 1 angular nodes is 6pz.