Electron config ET 3

Choose the correct electron configuration for Beryllium (Be).

• 1s¹

• 1s² 2s²

• 1s² 2s² 2p¹

Choose the correct electron configuration for Chlorine (Cl).

• 1s² 2s² 2p¹

• 1s² 2s² 2p⁶ 3s²

• 1s² 2s² 2p⁶ 3s² 3p⁵

Choose the correct electron configuration for Krypton (Kr).

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁸ 3d⁸

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸ 4p3

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸ 4p⁶

Match the elements with their electron configuration! (3 minutes)

• Argon, Ar

• 1s² 2s² 2p⁶ 3s² 3p³

• Helium, He

• 1s² 2s² 2p³

• Nitrogen, N

• 1s² 2s² 2p⁶ 3s² 3p⁶

• Manganese, Mn

• 1s²

• Phosphorus, P

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵

What is the noble gas configuration for Cobalt?

• [Kr] 4s² 3d⁷

• [Kr] 4s² 4d⁷

• [Ar] 4s² 3d⁷

• [Ar] 4s² 4d⁷