Complete the details for Oxygen (8 extO) including orbital diagram, electron configuration, period, group, valency, and ion.

Here are the completed details for Oxygen ($^{8}\text{O}$):

For $^{8}\text{O}$ (Oxygen, Z=8):

• Orbital Diagram:
  • 2p: $\boxed{\uparrow \downarrow} \boxed{\uparrow \quad} \boxed{\uparrow \quad}$
  • 2s: $\boxed{\uparrow \downarrow}$
  • 1s: $\boxed{\uparrow \downarrow}$
• (1) highest filled energy level = 2
• (2) period = 2
• (3) valence electrons = 6
• (4) inner electrons = 2
• (5) valency = 2
• (6) group number = 16
• (7) electron configuration: $1s^2 2s^2 2p^4$
• (8) shortened electron configuration: $[\text{He}] 2s^2 2p^4$
• (9) symbol of ion: $\text{O}^{2-}$
• (10) electron configuration of ion: $1s^2 2s^2 2p^6$