Bohr Model

The first energy level can hold ____ electrons

• 1

• 2

• 3

• 8

How many electrons can the 2nd and 3rd energy levels hold? 

• 6

• 8

• 2

• 10

Which family is he skipping? 

• Alkali metals

• Noble gases

• Halogens

• Transition metals

If we assume an atom does NOT have a charge then the number of electrons will be equal to: 

• The # of neutrons

• the # of protons

What is the abbreviation for protons? 

• ⁰e^-

• n⁰

• p⁺

Which energy levels fill up first?

• those closest to the nucleus

• those farthest from the nucleus

Which electrons are most important? 

• those in 1st energy level

• those in 2nd energy level

• the valence electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Where are the valence electrons located?

• closest energy level to the nucleus

• furthest energy level from the nucleus

Tags

NGSS.HS-PS1-1

All elements in group 1 have how many valence electrons? 

• 1

• 2

• 8

What pattern do you notice for valence electrons of elements in group 2? 

• they all have 1 valence electron

• they all have 2 valence electrons