Electronic Configuration

The electronic configuration of Ca is?

• 2,8,8,2

• 2,8,8,8,8,6

• 2,8,8

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NGSS.HS-PS1-1

How many electrons can the third shell have?

• Two

• Eight

• Five

• Three

What is the electronic configuration of Lithium?

• 2.8.8

• 2.2.2

• 2.8.5

• 2.1

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NGSS.HS-PS1-1

How many electron shells/levels does this atom have?

• 1

• 2

• 3

• 4

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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

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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 there should only be 1 orbital 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

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Electron subshells are most stable

• with all orbitals full or all empty

• with orbitals exactly 3/4 full

• with orbitals exactly 3/4 empty

• with orbitals exactly 1/2 full

Predict how the valence electrons in iron metal (iron 0) should be organized.

• 
• 
• 
• 

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NGSS.HS-PS1-1

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Chemists can identify the composition of some unknown salts by conducting a flame test. When potassium salts are heated in a flame, a purple color is observed.

This is due to the movement of electrons between energy levels. What is the electron configuration of a potassium atom at ground state?

• 1s²; 2s²; 2p⁶; 3s²; 3p⁶; 4d¹

• 1s²; 2s²; 2p⁶; 3s²;3p⁶; 3d¹

• 1s²; 2s²; 2d⁶; 3s²; 3d⁶; 4s¹

• 1s²; 2s²; 2p⁶; 3s²; 3p⁶; 4s¹

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NGSS.HS-PS1-1