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def definition def or abbrev

waterAnglePrediction

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formal statement (Lean)

 146def waterAnglePrediction : ℝ := tetrahedralAngleDegrees - 5  -- Approximate LP correction

proof body

Definition body.

 147
 148/-- Ammonia (NH₃) bond angle is between water and tetrahedral.
 149    Observed: 107°. -/

depends on (7)

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