AP Chemistry Video

What atom matches this electron configuration?
1s²2s²2p⁶3s²

• Neon
• Magnesium
• Aluminum
• Potassium

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What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

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An orbital can at most hold how many electrons?

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

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3
• 6
• 8
• 10

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What is the electron configuration of Ag?

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s¹ 4d¹⁰
• [Kr] 5s² 4d⁹
  
• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4p⁶ 5s² 4d⁹
  
• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4d¹⁰ 4p⁶ 5d¹⁰ 5s² 4d⁹
  

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What is the shape of an s orbital?

• sphere

• dumbbell

• pear

How many d orbitals are there in a given sublevel?

• 1
• 3
• 5
• 7

How many electrons can the d sublevel hold?

• 8
• 10
• 2
• 4

Which is associated with more energy? 

• 2p
• 2s
• 3p
• 1s

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What is this element? 
1s²2s²2p⁶3s²3p⁶
4s²3d¹⁰4p⁶

• Argon
• Krypton
• Selenium
• Bromide

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