Electron Configuration and Valence Electrons

How many valence electrons does Chlorine have?

• 5

• 2

• 7

• 5

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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

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What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Tags

NGSS.HS-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

NGSS.HS-PS1-2

Which electron configuration belongs to Chlorine (Cl)?

• 1s² 2s² 2p⁶ 3s² 3p⁵

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁷

Tags

NGSS.HS-PS1-1

Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?

• Hund’s Rule

• Aufbau Principle

• Pauli Exclusion Principle

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

• Neon

• Magnesium

• Aluminum

• Potassium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are represented here?

• 7

• 5

• 2

• 8

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NGSS.HS-PS1-1

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How many electrons can the d sublevel(orbital) hold?

• 8

• 10

• 2

• 4

What is this element?

• Argon

• Krypton

• Selenium

• Bromide

Tags

NGSS.HS-PS1-1