The number of angular nodes in the electron cloud of an atom depends on the specific electron orbital. For example, in an s orbital, there are no angular nodes, while in a p orbital, there is one angular node. In general, the number of angular nodes in an electron cloud can vary depending on the orbital shape and quantum numbers.
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The total number of nodes in the electron cloud of an atom, including both angular nodes and radial nodes, is determined by the quantum numbers of the electron. The number of nodes can vary depending on the specific electron configuration of the atom.
An atom with a principal quantum number of 3 has 2 radial nodes in its electron cloud.
There are 3 nodes present in a 4f orbital: one radial node and two angular nodes. This means that there are regions in the orbital where the probability of finding an electron is zero.
Radial nodes are regions in an atomic orbital where the probability of finding an electron is zero along the radius from the nucleus, while angular nodes are regions where the probability of finding an electron is zero along specific angular directions. Radial nodes are spherical in shape, while angular nodes are planar or conical.
For an s orbital, there are no angular nodes. For a p orbital, there is 1 angular node. For a d orbital, there are 2 angular nodes. The maximum number of angular nodes is given by n-1, where n is the principal quantum number of the orbital.