Flashcard Lewis Dot Structures for Covalent Comp (2024-2025)

Front

What is a Lewis Dot Structure?

Back

A Lewis Dot 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 fluorine (F) have?

Back

Fluorine has 7 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 have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is the Lewis Dot Structure for the molecule F2?

Back

The Lewis Dot Structure for F2 shows two fluorine atoms, each with 7 valence electrons, sharing one pair of electrons.

Front

How many valence electrons are needed for most elements to achieve stability according to the octet rule?

Back

Most elements need 8 valence electrons to achieve stability.

Front

What is the correct Lewis Dot Structure for ammonia (NH3)?

Back

The Lewis Dot Structure for NH3 shows one nitrogen atom bonded to three hydrogen atoms, with one lone pair of electrons on the nitrogen.

Front

What is the Lewis Dot Structure for BF3?

Back

The Lewis Dot Structure for BF3 shows one boron atom bonded to three fluorine atoms, with no lone pairs on the boron.

Front

What does it mean for an atom to be stable?

Back

An atom is considered stable when its outermost electron shell is full, typically having 8 electrons.

Front

What is the significance of lone pairs in Lewis Dot Structures?

Back

Lone pairs represent non-bonding electrons that can affect the shape and reactivity of the molecule.

Front

How do you determine the number of valence electrons in an element?

Back

The number of valence electrons can be determined by the group number of the element in the periodic table.