Lewis structures, VSEPR, polarity

Front

What is a Lewis structure?

Back

A Lewis structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

Front

What does VSEPR stand for?

Back

VSEPR stands for Valence Shell Electron Pair Repulsion, a model used to predict the geometry of individual molecules based on the repulsion between electron pairs.

Front

What is the electron geometry of a molecule with four electron groups?

Back

Tetrahedral.

Front

Define polarity in chemistry.

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond, leading to a molecule having a positive and a negative end.

Front

What is the molecular geometry of CO2?

Back

Linear.

Front

How do you determine the number of valence electrons in a molecule?

Back

Add the valence electrons of each atom in the molecule, considering any charges.

Front

What is a lone pair?

Back

A lone pair is a pair of non-bonding electrons that are localized on a single atom.

Front

What is the molecular geometry of ammonia (NH3)?

Back

Trigonal Pyramidal.

Front

What type of bond is formed between calcium and chlorine in CaCl2?

Back

Ionic bond.

Front

How many valence electrons are in the sulfate ion (SO4^2-)?

Back

32 electrons.