vsepr formula

[Savannah Mance 4G]

When a question asks for the VSEPR formula, is it asking for me to explain how the vsepr theory of electron repulsion relates to the molecule? What does it mean by formula?

[chemboi]

My interpretation is the AXnEm form of central atom, # surrounding atoms, and # lone pairs. If anyone else knows for sure, that would be greatly appreciated!

[Rishika Yadav 3D]

Yes, the VSEPR formula is the AXE formula.

[Kaitlynn Tran 3F]

The VSEPR formula is a way to denote how many central atoms, bonded atoms, and lone-pairs there are on the molecule. It follows the pattern of A_nX_nE_n, where A is the central atom, X is a bonded atom, E is a lone pair, and the subscript n is the number of each. So a molecule with 3 bonded atoms around the central atom and 2 lone pairs would be AX₃E₂ and T-shaped.

[Maika Ngoie 1B]

The VSEPR formula means the question is asking you to write out the AXE formula.

[jisulee1C]

The VSEPR formula depends on the valence electron bonding to the central atom. Therefore depending one whether it is lone pair electron or bonded electron pair it will change the molecular shape of the molecule.

[Aarushi Solanki 4F]

It is asking for the formula AXbEc, where A is the central atom, X is a ligand (unspecific) with subscript b as the number of ligands attached to A, and E indicates a lone pair with subscript c describing the number of lone pairs on central atom A.

[Leyna Dang 2H]

You'd use the AXE formula where you'd look at the central atom of the compound and determine how many atoms are bonded to it and how many lone pairs it has.