Unit 2: Electron Configuration Learning Check

What does the Aufbau order state about energy levels?

• Higher energy levels are filled first.

• Lower energy levels are filled first.

• Energy levels are filled randomly.

• Only the outermost energy level is filled.

Which element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²?

• Neon

• Argon

• Potassium

• Calcium

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How many electrons does the element with the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰ have?

• 18

• 20

• 28

• 30

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NGSS.HS-PS1-1

Which element has the electron configuration 1s²2s²2p⁶3s²3p²?

• Silicon

• Phosphorus

• Argon

• Germanium

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What is the electron configuration for Neon?

• 1s²2s²2p⁶

• 1s²2s²2p⁴

• 1s²2s²2p³

• 1s²2s²2p⁵

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Which element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d⁴?

• Phosphorus

• Sulfur

• Potassium

• Chromium

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How many electrons does Carbon have?

• 4

• 6

• 8

• 10

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Which element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s¹?

• Potassium

• Calcium

• Argon

• Krypton

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What is the electron configuration for Argon?

• 1s²2s²2p⁶3s²3p⁶

• 1s²2s²2p⁶3s²3p⁴

• 1s²2s²2p⁶3s²3p²

• 1s²2s²2p⁶3s²3p³

Tags

NGSS.HS-PS1-1

Which element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d²?

• Titanium

• Zinc

• Krypton

• Strontium

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