3.7 Electron Configuration

What is the electron configuration for Calcium?

• 1s²2s²2p⁶3s²3p⁶4s²

• 1s²2s²2p⁶3s²3p⁶4s¹

• 1s²2s²2p⁶3s²3p⁶4s³

• 1s²2s²2p⁶3s²3p⁶

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What neutral atom has an electron configuration of 1s²2s²2p²?

• Beryllium

• Boron

• Carbon

• Nitrogen

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What is the electron configuration for Nitrogen?

• 1s²2s²2p³

• 1s²2s²2p⁴

• 1s²2s²2p²

• 1s²2s²2p⁵

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You are given an atom with the following electron configuration: 1s²2s². How many valence electrons are present in this atom?

• 1

• 2

• 3

• 4

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You are given an atom with the following electron configuration: 1s²2s²2p⁴. How many valence electrons are present in this atom?

• 2

• 4

• 6

• 8

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Which of the following represents the electron configuration for the most stable ion of Nitrogen?

• 1s²2s²2p³

• 1s²2s²2p⁴

• 1s²2s²

• 1s²2s²2p⁶

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How many valence electrons are present in the most stable ion of nitrogen?

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What is the oxidation number for nitrogen?

Which of the following represents the electron configuration for the most stable ion of Hydrogen?

• 1s¹

• 1s²

• 1s⁸

• 1s²2s²2p⁶

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How many electrons does Hydrogen and Helium need to be stable?