Electron configuration

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

• Neon
• Magnesium
• Aluminum
• Potassium

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NGSS.HS-PS1-1

Which is the electron configuration for an oxygen atom?

• 1s²2s²2p⁶3s²3p⁶4s²
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶

Tags

NGSS.HS-PS1-1

What is the maximum number of electrons that an orbital can have?

• 1 electron
• 2 electrons
• 3 electrons
• 4 electrons

What is this element? 
1s²2s²2p⁶3s²3p⁶
4s²3d¹⁰4p⁶

• Argon
• Krypton
• Selenium
• Bromide

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NGSS.HS-PS1-1

What is the electron configuration for Helium?

• 1s² 2s²

• 1s² 2s¹

• 1s²

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NGSS.HS-PS1-1

List the following in increasing order: 2p 1s 3s 2s 3p

• 2s 1s 3s 2s 3p

• 3p 3s 2p 2s 1s

• 1s 2s 2p 3s 3p

Tags

NGSS.HS-PS1-1

The electron configuration of an atom is 1s²2s²2p⁶. How many electrons are in this atom?

• 3

• 6

• 8

• 10

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NGSS.HS-PS1-1

What are valence electrons?

• Electrons farthest away from the nucleus

• Electrons closest to the nucleus

• Electrons that just come and go - they don't stay with the atom

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.HS-PS1-1

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0