Title: WebStraw: Chemistry Review Anki Deck / Chemical Bonding / 2. VSEPR and 3D Structure

Text: Basics of VSEPR
1. Valence electron pairs (bonded and lone) repel each other
2. The geometry around the central atom will be such as to minimize the electron repulsion
3. Attractive forces exerted by the nuclei of the 2 bonded atoms hold electrons in a bond.
        a. electrons in bonds take up less space. b. lone-pair e-s take up more space, and therefore experience more repulsion.
4. Thus, according to VSEPR, the repulsive forces decrease in the following order: LP-LP > LP-BP > BP-BP

Q: Electronic Geometry:
A: The theoretical geometric shape that all of the electron pairs on the central atom create.

Q: Molecular Geometry:
A: The actual 3D shape of the bonded atom.

Q: Steric Number
Total number of electron pairs on the central atom;  equal to the [...].
A: # of bonding pairs (BP) + # of lone pairs (LP)

Q: Shape/Geometry of Molecule depends on:
1. number of [...]
2. number of [...]
A: atoms bonded to central atom; lone pairs of electrons on the central atom