Atomic Orbitals Shapes and Sizes

You will recall (page 139) that an orbital occupied by an electron in an atom can be represented physically by showing the region of space in which there is a 90% probability of finding the electron. Orbitals are commonly designated by citing the corresponding sublevels. Thus we refer to Is, 2s, 2p, 3s, 3p, 3d. orbitals. 

The three p orbitals are located at 90° angles to each other. 

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