Electron Dot Diagram-8.51

This could be the dot diagram of

• Mg

• Cl

• C

• O

This is a correct dot diagram for nitrogen (N)

• true

• false

This is a correct dot diagram for neon (Ne)

• true

• false

Which of these is incorrect?

• 
• 

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

What are the elements (Be, Mg, Ca,...) in Group 2 called?

• Alkali metals

• Alkaline earth metals

• Halogens

• Noble Gases

Elements that have atoms with stable valence electron configurations in the ground state are

• Group 1

• Group 2

• Group 17

• Group 18

This could be the dot diagram of

• P
• Ar
• Na
• B

This could be the dot diagram of an element with the atomic number

• 8

• 31

• 19

• 36

Most elements will gain or lose electrons so that they end up with _______ valence electrons.

• 2
• 6
• 8
• 10