We continue our discussion of structure and bonding by introducing the valence-shell electron-pair repulsion (VSEPR) model (pronounced “vesper”), which can be used to predict the shapes of many molecules and polyatomic ions.

VSEPR theory is used to predict the arrangement of electron pairs around central atoms in molecules, especially simple and symmetric molecules.

Select Shape Shell Planar from the main menu bar to create this type of feature. To create a shell-from-solid feature, you convert the faces of a solid feature to shell features; in effect, hollow out a solid.

In order for each fluorine atom to keep its lone pairs as far away as possible from the other fluorine atoms, the molecule forms a triangular, 2-dimensional shape. In molecular geometry, this is known as “trigonal planar”. The bond angles in a trigonal planar molecule are 120 degrees.

Jan 16, 2025 · The Valence Shell Electron Pair Repulsion (VSEPR) theory is a simple and useful way to predict and rationalize the shapes of molecules.

From an electron group geometry perspective, GeF 2 has a trigonal planar shape, but its real shape is dictated by the positions of the atoms. This shape is called bent or angular . A molecule with four electron groups about the central atom orients the four groups in the direction of a tetrahedron, as shown in Figure \(\PageIndex{1 ...

Unlike the 5-region of charge that loses the horizontal atoms first to non-bonding pairs, the 6-region shape loses its two vertical atoms which are replaced by non-bonding pairs. The shape the remaining bonded regions of negative charge form is a square planar shape.

Select Shape Shell Planar from the main menu bar to add a planar shell feature to the part in the current viewport. The planar shell tool is always available, regardless of the modeling space of the part in the current viewport.

The model used to predict the shape of a molecule is known as the Valence Shell Electron Pair Repulsion Theory (often remembered by the acronym VSEPR). The model presumes that the groupings of electrons surrounding the central atom will repel each other.

Aug 21, 2018 · Interpret the non-linear shape of H2S molecule and non-planar shape of PCl3 using valence shell electron pair repulsion (VSEPR) theory.