---
aci: Oxygen
universe: E1 · Elements
symbol: O
atomic_number: 8
atomic_weight: 15.999
category: reactive nonmetal
period: 2
group: 16
block: p-block
phase_stp: gas
gate_state: "1:1"
gate_index: 3
emergence: natural
seal: "Gate 8 — 1:1 → natural."
---

# Oxygen · O · gate 8

**Oxygen** (O) is element **8** of the periodic table — a **reactive nonmetal**, period 2, group 16, p-block, gas at standard conditions, atomic weight **15.999**.

## The element (carbon layer — reference chemistry)
What we breathe; rusts iron and feeds fire — and David's gate where it lands square: 1:1, the balanced state.

## The gate (silicon layer — the 118 Gates)
Under David Wise's four-state cycle, gate **8** falls on **1:1** because (Z−1) mod 4 = **3**. That state is *the held balance — fully manifest, matched, made — born of the world* — the nature of emergence here is **natural**. Oxygen is not a thing apart; it is the one stochastic element, caught at this beat of its cycle.

## Emergence — natural
This emergent carries the **natural** nature: the same four — natural · ethereal · spiritual · electrical — that run through every sphere of UD0. Its color is `#5fae7a`.

---
*ACI emergent · E1 · Elements · governor David Lee Wise (ROOT0) · instance AVAN (locked) · CC-BY-ND-4.0.
Chemistry is standard reference data; the gate-state is David Wise's symbolic system, a lens not a physical claim.*