VSEPR Formula

(Polar molecules, Non-polar molecules, etc.)

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Bao Tram Nguyen
Posts: 35
Joined: Sat Aug 24, 2019 12:17 am

VSEPR Formula

Postby Bao Tram Nguyen » Thu Nov 14, 2019 7:15 pm

When a question asks for the VSEPR formula, is it asking for you to identify the number of lone and bonded electron pairs?

Claire Lo 3C
Posts: 55
Joined: Sat Aug 17, 2019 12:18 am

Re: VSEPR Formula

Postby Claire Lo 3C » Thu Nov 14, 2019 8:19 pm

Essentially yes. The number of bonded electron pairs represents X, and the number of lone pairs represets E.

Notice that a single bond, double bond, and triple bond all count towards a single X.

andrewcj 2C
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: VSEPR Formula

Postby andrewcj 2C » Thu Nov 14, 2019 9:10 pm

Generally, an A represents the central atom, an X represents an atom bonded to it, and an e represents a lone pair. For example, the formula of a tetrahedral shape would be AX4, and the formula for a bent shape would be AX2e2.


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