Lewis structures

Front

According to the octet rule, most elements need _______ valence electrons.

Back

8

Front

A covalent bond is

Back

A bond that shares electrons between non-metals.

Front

How many total valence electrons are participating in bonding in a stable molecule?

Back

8

Front

This is a correct dot diagram for oxygen (O): True or False?

Back

False

Front

Which of these is the correct Lewis structure for NH3?

Back

[Insert correct Lewis structure for NH3]

Front

What is a Lewis structure?

Back

A diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

Front

What does the term 'valence electrons' refer to?

Back

Electrons in the outermost shell of an atom that are involved in forming bonds.

Front

What is the significance of the octet rule in chemistry?

Back

It 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 the difference between a single bond and a double bond?

Back

A single bond involves one pair of shared electrons, while a double bond involves two pairs of shared electrons.

Front

What is a lone pair of electrons?

Back

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