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The shapes of p, d and forbitals are described verbally here and shown graphically in the Orbitals table below The three porbitals for n = 2 have the form of two ellipsoids with a point of tangency at the nucleus (the twolobed shape is sometimes referred to as a "dumbbell"—there are two lobes pointing in opposite directions from each other)S, p, d, f and so on are the names given to the orbitals that hold the electrons in atoms These orbitals have different shapes (eg electron density distributions in space) and energies (eg 1s is lower energy than 2s which is lower energy than 3s;The shapes of the other orbitals are more complicated The letters s, p, d, f, originally were used to classify spectra descriptively into series called sharp, principal, diffuse, and fundamental, before the relation between spectra and atomic electron configuration was known Chapter 2 5 Atomic Orbitals And Their Energies Chemistry Libretexts S p d f orbitals shapes in hindi