Element identity
Atomic number, symbol, relative atomic mass display and periodic position are established reference data.
Atomic / electronic model
Ground-state electron configuration and atomic reference values are compiled/evaluated data; orbital graphics are teaching probability models, not photographs.
Material / molecular structure
The displayed ordinary structure is based on established material or molecular science; simplified viewers are labelled as teaching schematics where exact crystallographic coordinates are not rendered.
Temperature / phase path
Transition values are reference/evaluated values for the stated teaching path; pressure, purity and allotropy can matter.
Geography
Real pins use reviewed place/dataset context. Conceptual layers are used when country pins would imply false occurrence, unsafe inventory or an incomplete global distribution.
The lens describes evidence status, not confidence theatre. “Unknown” is kept unknown, and teaching schematics are not presented as direct measurements.
Neon (Ne)
Neon is a Group 18 noble gas with a closed 2s²2p⁶ outer shell. It is famous for its intense red-orange electrical-discharge glow, yet in Earth’s atmosphere it is only a trace gas at about 18 parts per million.
Neon atomic number, mass, electron configuration and key properties
Neon: quick answers
How many protons, neutrons and electrons does neon have?
Neon’s atomic number is 10, so every neon atom has 10 protons, and a neutral atom also has 10 electrons. Its most common natural isotope, neon-20, has 10 neutrons (other isotopes have different neutron counts).
What is the symbol for neon?
The chemical symbol for neon is Ne.
Is neon a solid, liquid or gas at room temperature?
Neon is a gas at room temperature (about 25 °C).
What family (group) is neon in?
Neon is a noble gas, in group 18, period 2 of the periodic table.
How many valence electrons does neon have?
Neon has 8 valence electrons, the electrons in its outer shell, which matches its position in group 18.
What is the electron configuration of neon?
The ground-state electron configuration of neon is [He] 2s² 2p⁶.
From atomic number to chemistry
Read these as a chain of causes, not as isolated facts. Each step links to the concept hub if you want the underlying idea explained.
Ten protons define neon; neutral Ne has 10 electrons.
The second shell is closed, making neon a classic noble-gas reference.
A closed octet explains neon’s very low ordinary chemical reactivity.
Neon closes Period 2 and sits above argon in the noble gases.
Neon’s liquid interval at ordinary pressure is narrow and far below room temperature.
Neon in its period and family
Neon ends Period 2 in Group 18. Its closed 2s²2p⁶ shell makes neutral neon exceptionally unreactive under ordinary conditions and provides a benchmark for comparing heavier noble gases.
Neon Visual Lab
Decode neon’s tile, rotate a ²⁰Ne teaching nucleus, inspect the closed-shell 2s and 2p probability models, view a nonbonded monatomic-gas teaching scene, and connect neon to atmospheric trace abundance, gas discharges, lasers and cryogenics.
Every mark points to one exact feature
The numbered markers explain the same information system used throughout Element Lookup. Unknown or predicted fields remain visibly labelled rather than being replaced with guesses.
Neon in one minute
Atomic number 10 means every neon nucleus contains 10 protons.
The ground state [He] 2s² 2p⁶ closes the second shell.
Neon is a monatomic noble gas at ordinary conditions.
Natural neon is dominated by stable ²⁰Ne, with smaller ²²Ne and ²¹Ne abundances.
Excited neon emits a characteristic red-orange glow in electrical discharge tubes.
Shell rings organize electron counts. They are not electron trajectories or orbital shapes.
2 · 8 electrons
The occupied 2s orbital is spherical with one radial node; the occupied 2p orbitals are two-lobed with a nodal plane and selectable orientation. These are atomic probability-density teaching models for a closed-shell atom, not glowing electron tracks.
At ordinary conditions neon is a monatomic gas; low-temperature solid neon adopts a close-packed/FCC structure. The viewer is evidence-aware: measured structures are identified as such; unknown bulk structures stay unknown.
Teaching visualization; not a literal finite sample or thermal trajectory.What this model does—and does not—show
The occupied 2s orbital is spherical with one radial node; the occupied 2p orbitals are two-lobed with a nodal plane and selectable orientation. These are atomic probability-density teaching models for a closed-shell atom, not glowing electron tracks.
Where do I meet neon?
Clickable learning cards connect the element to materials, environment, technology, biology or research - depending on what the evidence actually supports.
Neon signs
Electrical excitation of neon produces an intense red-orange emission. Many signs casually called “neon” use other gases or phosphors for other colors.
Colorless gas vs glowing discharge
Neon itself is colorless at ordinary conditions; the famous red-orange glow appears when an electrical discharge excites the gas.
Colorless neon
At room conditions neon is a colorless, monatomic noble gas.
Helium, neon and argon
These noble gases all have closed valence shells, but their electron counts, polarizabilities, boiling points and spectroscopy differ. Neon is the Period 2 closed-shell benchmark.
| Closed shell | 1s² |
|---|---|
| Ordinary state | monatomic gas |
| Closed shell | 2s² 2p⁶ |
|---|---|
| Ordinary state | monatomic gas |
| Discharge | red-orange emission |
| Closed shell | 3s² 3p⁶ |
|---|---|
| Ordinary state | monatomic gas |
Neon properties: atomic, physical, thermal and chemical
Categories follow the science of this element rather than a fixed decorative template. Each row carries condition/provenance context and an evidence label; unknown values stay unknown.
| Property | Value | Context / provenance | Evidence |
|---|---|---|---|
| Atomic number | 10 | Source-reviewed; see Sources below | Evaluated |
| Relative atomic mass | 20.180 | Source-reviewed; see Sources below | Evaluated |
| Ground-state electron configuration | [He] 2s² 2p⁶ | Source-reviewed; see Sources below | Evaluated |
| Group / period / block | Group 18 · Period 2 · p-block | Periodic-table placement | Evaluated |
| Electronegativity | Not conventionally assigned | Source-reviewed; see Sources below | Evaluated |
| Reference isotope | ²⁰Ne | Source-reviewed; see Sources below | Evaluated |
| Property | Value | Context / provenance | Evidence |
|---|---|---|---|
| State context | Monatomic gas at 20 °C | Source-reviewed; see Sources below | Evaluated |
| Density | 0.000825 g/cm³ | Source-reviewed; see Sources below | Evaluated |
| Material / molecular structure | Monatomic gas | At ordinary conditions neon is a monatomic gas; low-temperature solid neon adopts a close-packed/FCC structure | Measured |
| Classification | Noble gas | Periodic-table / chemistry classification | Evaluated |
| Structure-model scope | At ordinary conditions neon is a monatomic gas; low-temperature solid neon adopts a close-packed/FCC structure | Teaching visualization; exact crystallographic coordinates are not implied unless stated. | Reviewed |
| Property | Value | Context / provenance | Evidence |
|---|---|---|---|
| Melting / transition reference | 24.56 K | Source-reviewed; see Sources below | Evaluated |
| Boiling / gas reference | 27.104 K | Source-reviewed; see Sources below | Evaluated |
| Phase-path context | At approximately standard pressure, neon is solid below 24.56 K, liquid only in the narrow interval from 24.56 K to 27.104 K, and gaseous above 27.104 K. | Shared phase registry drives the slider, regions and markers. | Evaluated |
| Condition warning | Temperature and pressure define phase behavior; purity/allotropy may matter. | Teaching condition statement | Reviewed |
| Property | Value | Context / provenance | Evidence |
|---|---|---|---|
| Ordinary appearance | Colorless gas | Visible glow requires excitation; ordinary neon is not red-orange. | Measured |
| Electrical discharge | Characteristic line-rich emission | Excited-state transitions produce the familiar glow. | Measured |
| Electron configuration | [He] 2s² 2p⁶ | Source-reviewed; see Sources below | Evaluated |
| Chemistry | Noble-gas behavior under ordinary conditions | Source-reviewed; see Sources below | Evaluated |
| Property | Value | Context / provenance | Evidence |
|---|---|---|---|
| ²⁰Ne | Stable · ≈90.48% natural abundance | The dominant natural isotope; 10 protons and 10 neutrons. | Evaluated |
| ²¹Ne | Stable · ≈0.27% | A minor stable isotope useful in geochemical and cosmogenic-isotope studies. | Evaluated |
| ²²Ne | Stable · ≈9.25% | The second most abundant natural isotope. | Evaluated |
| Teaching nucleus | ²⁰Ne · 10 protons + 10 neutrons | Reference isotope used in the nucleus model | Reviewed |
| Property | Value | Context / provenance | Evidence |
|---|---|---|---|
| Page evidence note | Atomic/isotope and phase data are measured/evaluated. Atmospheric abundance is a global composition value, so the occurrence map uses a global layer instead of invented country pins. | Evidence summary for this guide | Reviewed |
| Structure evidence | At ordinary conditions neon is a monatomic gas; low-temperature solid neon adopts a close-packed/FCC structure | Measured structure, labelled schematic, prediction or explicit unknown as applicable. | Reviewed |
| Map evidence rule | Real pins are reviewed examples; conceptual layers are used when pins would mislead. | Geography Explorer 2.0 | Reviewed |
| Source set | 4 primary/reference links listed below | Open the Sources section for the actual references. | Reviewed |
Is Neon a solid, liquid or gas? State at temperature
At approximately standard pressure, neon is solid below 24.56 K, liquid only in the narrow interval from 24.56 K to 27.104 K, and gaseous above 27.104 K.
Where on Earth is Neon found or produced?
Who discovered Neon, and when?
William Ramsay and Morris Travers discovered neon in London while separating components of liquefied air.
The name came from the Greek neos, meaning “new.”
Gas-discharge lighting made neon’s intense red-orange emission widely recognizable.
Neon is used in signs, indicators, lasers, cryogenic systems and scientific spectroscopy.
From trace atmospheric gas to purified neon
Neon is present in Earth’s atmosphere at only tens of parts per million and is collected as part of industrial air separation.
Cooling and fractional-distillation steps concentrate rare-gas fractions from liquefied air.
Further purification separates neon from helium and other gases for specialty applications.
The product enters lighting, laser, cryogenic and scientific-gas markets; it is not a mined mineral commodity.
What is neon used for?
Discharge lighting
Neon produces an intense red-orange glow in low-pressure electrical discharge and is used in signage and indicators.
Helium-neon lasers
Neon supplies the laser transitions in the classic He-Ne laser system.
Cryogenic refrigeration
Liquid neon is a specialized cryogenic refrigerant with useful cooling capacity.
Scientific spectroscopy
Neon emission lines are used in spectroscopy, calibration and atomic-physics demonstrations.
Neon isotopes and natural abundance
²⁰Ne
Stable · ≈90.48% natural abundanceThe dominant natural isotope; 10 protons and 10 neutrons.
²¹Ne
Stable · ≈0.27%A minor stable isotope useful in geochemical and cosmogenic-isotope studies.
²²Ne
Stable · ≈9.25%The second most abundant natural isotope.
Five-question Neon check
What is neon’s atomic number?
How many valence electrons does neon have?
What color is ordinary neon gas without electrical excitation?
Which isotope dominates natural neon?
How is commercial neon obtained?
Neon questions students commonly ask
Each answer starts with the direct fact, then explains the chemistry, evidence or material context so the result is understandable rather than merely memorized.
What is neon?
Short answer: Neon is chemical element 10, a Group 18 noble gas.
Atomic number 10 means every neon nucleus contains 10 protons. In the periodic table, Neon is classified here as a noble gas in Period 2 and Group 18. Neon ends Period 2 in Group 18. Its closed 2s²2p⁶ shell makes neutral neon exceptionally unreactive under ordinary conditions and provides a benchmark for comparing heavier noble gases.
Key point: Ne is element 10; its periodic position and electron structure explain the rest of the page.
How many valence electrons does neon have?
Short answer: Eight in its outer shell: the ground-state configuration ends 2s² 2p⁶.
The neutral-atom ground-state reference used on this page is [He] 2s² 2p⁶. This is an isolated-atom reference: bonding and ion formation can change which outer electrons are present or chemically active. The listed common oxidation-state context is 0 in ordinary elemental form, which helps connect the atomic configuration to ordinary chemistry without treating electron counting as a single universal rule.
Key point: Electron configuration is a ground-state atomic reference, not a literal picture of every compound.
How many protons, neutrons and electrons does neon have?
Short answer: All neon atoms have 10 protons. A neutral atom has 10 electrons. The common isotope ²⁰Ne has 10 neutrons.
Atomic number is defined by proton count, so 10 protons are what make an atom neon. A neutral neon atom also has 10 electrons, while isotopes can have different neutron counts without changing the element.
Key point: Atomic number = proton count.
Is neon a metal?
Short answer: No. Neon is a nonmetal noble gas.
This guide classifies Neon as a noble gas. Its periodic position is Period 2, p-block, Group 18. Neon ends Period 2 in Group 18. Its closed 2s²2p⁶ shell makes neutral neon exceptionally unreactive under ordinary conditions and provides a benchmark for comparing heavier noble gases.
Key point: Periodic-table classification describes recurring atomic/chemical behavior; it does not make every element in a column physically identical.
Why does neon glow red-orange?
Short answer: An electric discharge excites neon atoms; when electrons in those atoms return to lower-energy states, they emit photons at characteristic wavelengths that together appear red-orange.
Neon gas is colorless when it is not emitting light. The familiar sign color is an emission-spectrum phenomenon: electrical energy creates excited atomic states, and quantized electronic transitions produce a set of bright spectral lines. Other “neon signs” can use different gases or phosphors, so the everyday product name does not guarantee elemental neon.
Key point: The color comes from quantized emission by excited neutral neon atoms, not from the ordinary color of the gas.
Where is neon found?
Short answer: It is a trace component of Earth’s atmosphere at roughly 18 parts per million in dry air and is also abundant cosmically. Commercial neon is separated from air.
Neon is present in Earth’s atmosphere at only tens of parts per million and is collected as part of industrial air separation. The Geography Explorer keeps natural occurrence separate from resources, industrial production and recycling, because those datasets answer different questions about neon.
Key point: Natural occurrence, resources, production and recycling are different geography questions.
Scientific sources for Neon
- Royal Society of Chemistry - Neon
- NIST - Atomic Data for Neon
- NOAA - Composition of the atmosphere
- WebElements - Neon crystal structure
- RSC — Neon
Questions to ask next about Neon
A good element lesson should lead to the next useful question, not end after a list of facts.
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