Lewis Structures

When writing Lewis Structures, only __________ electrons are used.

• Inner shell
• Core 
• Valence
• Stable

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Each line in a Lewis Structure represents __________ electron(s).

• 3
• 2
• 1
• 4

An atom or molecule with unpaired electrons is called?

• Free ion
• Free radical
• Free isotope
• Free molecule

A molecule of water has what shape?

• Linear
• Tetrahedral
• Bent
• Triangular

A molecule of methane has what shape?

• Tetrahedral
• Triangular
• Pyramidal
• Octahedral

The theory that is used to predict the arrangement of atoms about a central atom is called?

• Valence shell repulsion
• Valence shell electron sharing
• Valence shell electron pair repulsion
• Valence electron shell repulsion pair

Atoms of H only form _________ bonds.

• Double
• Single
• Multiple
• Triple

Multiple bonds are possible if _______, ______, and ________ are present in a molecule.

• C,H,O
• H,O,N
• C,N,S
• C,N,O

Tags

NGSS.HS-LS1-6

Which image could be a representation of NH₃?

• A

• B

• C

 Lone electron pairs in a molecule...

• Never exist
• Are lost in space
• Creates an isotope
• Push the bonded atoms closer