Counting Valence Electrons Lewis Structures

The number of dots in a Lewis electron dot structure is equal to the number of

• valence electrons

• core electrons

• protons

• neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Electrons located in the highest occupied energy level of an atom are called

• Outer electrons

• Valence electrons

• Bonding electrons

• Reactive electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which energy shell do we look to determine the valence electrons?

• The closest to nucleus that has electrons

• The farthest from the nucleus that has electrons

• Always the 3rd shell

• All 3 shells

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons should Beryllium(4 electrons) have around its Lewis dot model?

• 1

• 2

• 3

• 4

How many electrons should Nitrogen ( 7 electrons)have around its Lewis dot model?

• 1

• 3

• 4

• 5

How many electrons should Helium (2 electrons) have around its Lewis dot model?

• 1

• 2

• 7

• 8

Tags

NGSS.HS-PS1-1