Flashcard - Lewis Structures - HHS

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

How many valence electrons does Carbon (C) have?

Back

Carbon has 4 valence electrons.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form molecules in such a way that they each have eight electrons in their valence shell, achieving a stable electron configuration.

Front

How many electrons does Hydrogen need to be stable?

Back

Hydrogen needs a total of 2 electrons in its valence shell to be stable.

Front

What does each line in a Lewis Structure represent?

Back

Each line in a Lewis Structure represents 2 electrons.

Front

What is the Lewis dot structure for Fluorine (F2)?

Back

The Lewis dot structure for F2 shows two fluorine atoms sharing one pair of electrons.

Front

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

Back

To determine the total number of valence electrons in a molecule, add the valence electrons of all the atoms present in the molecule.

Front

What is a lone pair of electrons?

Back

A lone pair of electrons is a pair of valence electrons that are not shared with another atom and are not involved in bonding.

Front

What is the significance of resonance structures?

Back

Resonance structures are used to represent molecules that cannot be adequately described by a single Lewis structure, indicating that the actual structure is a hybrid of multiple forms.

Front

What is the molecular geometry of a molecule with 4 bonding pairs and no lone pairs?

Back

The molecular geometry is tetrahedral.