Molecular Geometry

Polar or Nonpolar?

100

N₂

What is nonpolar

200

HCl

What is polar

300

CH₃CN

polar

400

BeCl₂

What is nonpolar

500

COCl₂

What is polar

What is the shape?

100

BF₃

What is trigonal planar

200

CF₄

What is tetrahedral

300

NI₃

What is trigonal pyramidal.

400

SF₂

What is bent

500

SiOS

What is linear. (there are double bonds)

Lewis Structures

100

HCOCN

formaldehyde

200

BH₃

 trigonal planar.

300

BeCl₂

tetrahedral.

400

SH₂

bent

500

PI₅

P has 10 valence

Names

100

PCl₃

Phosphorus trichloride

200

Li₂CO₃

Lithium carbonate

300

N₂O₄

Dinitrogen tetrachloride

400

SF₆

Sulfur hexafluoride

500

CaBr₂

Calcium bromide

Misc.

100

What are lone pairs?

pairs of electrons that are not bonded in a molecule

200

What does it mean for a MOLECULE to be polar?

something that has poles. One end positive and one end negative.

300

What is a dipole?

These occur when two atoms in a molecule have substantially different electronegativity: One atom attracts electrons more than another, becoming more negative, while the other atom becomes more positive. The have poles.

400

Explain the VSEPR theory.

Valence shell electron pair repulsion (VSEPR) theory is a model used, in chemistry, to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.

500

List the following from smallest to largest ionization energies.

O, F, S, Se

Se, S, O, F