Chapter 4 Practice

What element is this?

• Helium
• Hydrogen
• Argon
• Silver

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

How many dots would a Lewis Dot structure of Helium have?

• 1
• 2
• 8
• 0

How many valence electrons are in Phosphorus?

• 15
• 4
• 5
• 31

?

• Lithium
• Boron
• Carbon
• Neon

Which of these is incorrect?

• 
• 

All atoms are most stable with (or would "prefer") how many electrons in their valence shell?

• 1

• 2

• 8

• 18

All atoms are most stable with (or would "prefer") how many electrons in their valence shell?

• 1

• 2

• 8

• 18

How would you draw a Lewis dot diagram for Magnesium?

• 
• 
• 
• 

All of the elements in column 18 or group 8A have 8 electrons EXCEPT ______, which is actually stable with only 2 electrons.

• Hydrogen

• Helium

• Neon

• Fluorine