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Tetraedral: 4-sided pyramide (Can't be drawn with this text editor, so I'll try to describe:
ignore the dots . . . . . . they're just space holders)
__ . . . . . . . . .One free electron pair in top ( __ )
P . . . . . . . . . atom in center
. . . . . . . ./. .|. .\
. . . . . . . Br. Br. .Br . . . . . . three covalent (shared) pairs ( /, |, \ ) from centered P to
ground corners with three bromine atoms.
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What is the difference between the arrangement of electron pairs and the shape of the molecules?
The shape of a molecule only describes the arrangement of bonds around a central atom. The arrangement of electron pairs describes how both the bonding and nonbonding electron pair are arranged. For example, in its molecular shape, a water molecule is describes as bent, with two hydrogen atoms bonded to an oxygen atom. However, the arrangement of electron pairs around the oxygen atom is tetrahedral as there are two bonding pairs (shared with the hydrogen) and also two nonbonding pairs.
What is the spatial arrangement of lone pairs and bonded pairs around the central atom?
electron-group geometry Apex!
What is the Electron geometry for SI4?
The electron geometry for silicon tetrafluoride (SiF4) is tetrahedral. This is because the central silicon atom is surrounded by four bonding pairs of electrons from the four fluorine atoms, with no lone pairs on the silicon. The tetrahedral arrangement minimizes electron pair repulsion, resulting in bond angles of approximately 109.5 degrees.
What is the role of unshared electron pairs in predicting molecular geometries?
Lone electron pairs give the geometry a triangular base.
What is shape in pbr3?
What is 'pbr3' ??? If you mean the chemical phosphorus bromide , the formula is 'PBr3'. NOTE the use of Capital letters. Ther shape is pyrsmidal, similarl to its group analogy ammonia.
