Lewis Structures

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 type of bond is formed when two atoms share three pairs of electrons?

Back

Triple bond.

Front

What is the Lewis structure for nitrogen gas (N2)?

Back

The Lewis structure for N2 shows two nitrogen atoms connected by a triple bond, with each nitrogen having one lone pair of electrons.

Front

How many valence electrons does phosphorus (P) have?

Back

Phosphorus has 5 valence electrons.

Front

What is the correct Lewis structure for PBr3?

Back

The correct Lewis structure for PBr3 has phosphorus in the center with three bromine atoms bonded to it and one lone pair of electrons on phosphorus.

Front

What is the molecular geometry of BF3?

Back

The molecular geometry of BF3 is trigonal planar.

Front

What is a single bond?

Back

A single bond is a chemical bond between two atoms involving one pair of shared electrons.

Front

What is a double bond?

Back

A double bond is a chemical bond between two atoms involving two pairs of shared electrons.

Front

What is the Lewis structure for hydrogen cyanide (HCN)?

Back

The Lewis structure for HCN shows a hydrogen atom bonded to a carbon atom, which is triple bonded to a nitrogen atom.

Front

What is the significance of lone pairs in Lewis structures?

Back

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