Lewis Structures

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

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

Back

The Lewis Dot Structure for ammonia (NH3) shows nitrogen (N) in the center with three hydrogen (H) atoms bonded to it, and one lone pair of electrons on nitrogen.

Front

What is the correct Lewis Dot Structure for fluorine (F2)?

Back

The Lewis Dot Structure for fluorine (F2) shows two fluorine atoms bonded together, each with three lone pairs of electrons.

Front

What is the octet rule?

Back

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

Front

What is an incomplete octet?

Back

An incomplete octet refers to a situation where an atom has fewer than eight electrons in its valence shell.

Front

What is an expanded octet?

Back

An expanded octet occurs when an atom has more than eight electrons in its valence shell, typically seen in elements from the third period and beyond.

Front

What is a free radical?

Back

A free radical is a molecule that has an unpaired electron, making it highly reactive.

Front

How many valence electrons does beryllium (Be) have?

Back

Beryllium (Be) has 2 valence electrons.

Front

What is the Lewis Dot Structure for water (H2O)?

Back

The Lewis Dot Structure for water (H2O) shows oxygen (O) in the center with two hydrogen (H) atoms bonded to it, and two lone pairs of electrons on oxygen.

Front

What is the significance of lone pairs in Lewis Structures?

Back

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