Electrons Test

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

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

Tags

NGSS.HS-PS1-1

What is the charge of the electron

• positive
• no charge
• negative
• neutral

Tags

NGSS.HS-PS1-3

What electron configuration matches an oxygen atom?

• 1s²

• 1s²2s²2p⁴

• 1s²2s²

What atom matches this electron configuration?
1s² 2s² 2p⁶ 3s²

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

How many valence electrons?

1s² 2s² 2p⁶ 3s²

• 2

• 6

• 8

• 12

How many energy levels?

1s² 2s² 2p⁶ 3s²

• 1

• 2

• 3

How many total electrons?

1s² 2s² 2p⁶ 3s²

• 2

• 6

• 8

• 12

How many electrons can energy level 1 hold?

• 2

• 8

How many electrons can energy level 2 hold?

• 2

• 8