Electron Configurations

What electron configuration matches an oxygen atom?

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

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NGSS.HS-PS1-1

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

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NGSS.HS-PS1-1

How many valence electrons are in Phosphorus?

• 15
• 4
• 5
• 31

Tags

NGSS.HS-PS1-1

How many electrons are in the outer shell of Sodium (Na)?

• 3
• 1
• 2
• 4

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are represented here?

• 7
• 5
• 2
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element is pictured?

• neon
• fluorine
• magnesium
• argon

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NGSS.HS-PS1-1

The electron configuration for Tin is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p². What would the ion configuration look like if Tin has a +4 charge?

• [Ar]5s²4d¹⁰

• [Kr]5s²4d¹⁰

• [Kr]4d¹⁰

• [Xe]5d¹⁰

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify the element in Period 5 that has 1 valence electron?

• Rb
• Nb
• Ag
• Sb

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NGSS.HS-PS1-1

What is incorrect about this orbital diagram?

• Both arrows in the 2p box should be pointing up

• There is nothing incorrect with this diagram

• In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box

• All the arrows should be pointing up.

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NGSS.HS-PS1-1