Electron Configuration Check-In

What atom matches this electron configuration?
1s²2s²2p⁶3s²

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

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
  

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What electron configuration matches an oxygen ion?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Tags

NGSS.HS-PS1-1

What atom matches this electron configuration?
[Xe] 6s² 4f¹⁴ 5d⁹

• Mercury
• Gold
• Platinum
• Thallium

Tags

NGSS.HS-PS1-1

How many valence electrons does phosphorus have?

• 5
• 2
• 8
• 15

Tags

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.

Tags

NGSS.HS-PS1-1

What is the electron configuration for Ti⁺²?

• 1s²2s²2p⁶3s²3p⁶4s²4d²

• 1s²2s²2p⁶3s²3p⁶4s²3d²

• 1s²2s²2p⁶3s²3p⁶4s²

• 1s²2s²2p⁶3s²3p⁶3d²

For cations, electrons are always removed....

• from the highest energy level first

• from the lowest energy level first

• from s before p

• from d before s

What is the shorthand (noble gas) abbreviation for phosphorus?

• [Ar]3p³

• [Ne]3s²3p³

• [Ne]2s²2p³

• [Ne]3s²3p⁶

What is the shorthand electron configuration for Sulfur atom?

• [Ar] 3p⁴
• [He] 3s²3p⁴
• [Ne] 3s²3p⁴
• [Na] 3s²3p³
  

Tags

NGSS.HS-PS1-1