Lewis Dot Structures, Formal Charge, Resonance

Front

What is a Lewis Dot Structure?

Back

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 is the molecular geometry of BF3?

Back

Trigonal planar.

Front

How many pi bonds are in CO2?

Back

2.

Front

What is the difference between sigma and pi bonds?

Back

Sigma bonds are the first bonds formed between two atoms, while pi bonds are formed after a sigma bond and involve the sharing of electrons in parallel orbitals.

Front

How many sigma bonds are in a single, double, and triple bond respectively?

Back

1, 1, 1.

Front

What is the molecular geometry of SF4?

Back

Seesaw.

Front

What is the molecular geometry for ICl5?

Back

Square pyramidal.

Front

What is formal charge?

Back

Formal charge is the charge assigned to an atom in a molecule, calculated by the formula: Formal Charge = Valence Electrons - (Non-bonding Electrons + 1/2 Bonding Electrons).

Front

What is resonance in chemistry?

Back

Resonance is the concept that some molecules can be represented by two or more valid Lewis structures, which contribute to the overall hybrid structure.

Front

What is the significance of resonance structures?

Back

Resonance structures help to illustrate the delocalization of electrons in a molecule, leading to increased stability.