def definition def or abbrev

`e_2S_eV`

No prose has been written for this declaration yet. The Lean source and graph data below render without it.

formal statement (Lean)

 100def e_2S_eV : ℚ := 34/10  -- 3.4 eV

Definition body.

 101
 102/-- 2P binding energy in eV (magnitude, approximately same). -/

From the project-wide theorem graph. These declarations reference this one in their body.