Electron Levels

If an atom has 12 protons, how many valence electrons will that atom have? 

• 2
• 10
• 8
• 6

Which atom is it who has 3 energy levels and 4 valence electrons? 

• Carbon
• Lithium
• Silicon
• Aluminum

Identify this atom: 

• Lithium
• Chlorine
• Phosphorus 
• Fluorine

What is the number of valence electrons for Carbon?

• 12
• 6
• 5
• 4

How many valence electrons does Calcium have? How many energy levels does Calcium have?

• 2 valence: 4 energy levels 
• 20 valence:  4 energy levels 
• 4 valence: 2 energy levels 
• 2 valence: 3 energy levels 

What is the charge of the electron

• positive
• no charge
• negative
• neutral

Tags

NGSS.MS-PS2-3

The first orbital can hold a maximum of how many electrons?

• 2
• 3
• 8
• 6

How many valence electrons are represented here?

• 7
• 5
• 2
• 8

Which of the following elements has 18 electrons?

• Flourine
• Helium
• Argon
• Chlorine

What is the difference between the number of electrons in an atom of Calcium, Ca, and the number of electrons in an atom of Aluminum, Al?

• 20
• 7
• 13
• 27