Test On Bonding

What are valence electrons?

• The innermost electrons

• The outermost electrons

This is a correct dot diagram for fluorine (F)

• true
• false

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

• 2
• 8
• 6
• 18

What is the correct Lewis Dot Structure for ammonia NH₃

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• 
• 
• 

Which is the correct Lewis structure for carbon dioxide?

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• 
• 
• 

How many total electrons are participating in bonding in the molecule CH₂O?

• 8

• 4

• 2

• 3

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom

NH₃ has how many lone pairs?

• 0

• 1

• 2

• 3

A binary covalent bond exists between

• 2 metals
• 1 metal and 1 nonmetal
• 2 nonmetals
• Any 2 elements

According to the diagram below, how many bonds will this atom be able to make?

• 1
• 2
• 3
• 4