What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹

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NGSS.HS-PS1-1

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

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NGSS.HS-PS1-1

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

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NGSS.MS-PS1-1

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3
• 6
• 8
• 10

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NGSS.HS-PS1-1

 The diagram above represents two electrons with 

• a. opposite spins.
•  b. the same spin.
• c. different energies.
• d. different energy levels.

What is the correct electron configuration for a ground-state atom with 7 electrons? 

•  a. 1s² 2s² 2p³
•  b. 1s² 2s² 2p² 3s¹
• c. 1s² 2s³ 2p²
•  d. 1s² 2s⁵

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NGSS.HS-PS1-1

What is the correct noble-gas notation for the electron configuration of an atom of chlorine? 

• a. [Ar]3s² 3p⁵
•  b. [Ne]3s² 3p⁴
•  c. [Ar]3s² 3p⁴
•  d. [Ne]3s² 3p⁵

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NGSS.HS-PS1-1

This shape is that of a/n:

• s orbital

• p orbital

• d orbital

• f orbital

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NGSS.HS-PS1-1

Which is associated with more energy? 

• 2p
• 2s
• 3p
• 1s

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NGSS.HS-PS1-1

Which element is pictured?

• neon
• fluorine
• magnesium
• argon

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NGSS.HS-PS1-1