Neó (Ne)

chemical element with symbol Ne and atomic number 10; rare gas

Atomic Number	10
Atomic Weight	20.1797
Rhif màs	20

Group	18
Period	2
Block	p

Proton	10 p⁺
Niwtron	10 n⁰
Electron	10 e^-

Nodwedd Ffisegol

Atomic Radius	160 pm 156 pm
molar volume	16.8 cm³/mol
covalent radius	67 pm 96 pm 58 pm
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius	154 pm 154 pm 160 pm 324.3 pm
density	0.000825 g/cm³

Nodwedd Gemegol

egni

proton affinity	198.8 kJ/mol
electron affinity
ionization energy	21.56454 eV/particle 40.96296 eV/particle 63.42331 eV/particle 97.19 eV/particle 126.247 eV/particle 157.934 eV/particle 207.271 eV/particle 239.0969 eV/particle 1,195.80779 eV/particle 1,362.1991 eV/particle

enthalpy of vaporization	1.74 kJ/mol
enthalpy of fusion
standard enthalpy of formation
Electron

plisgyn yr electron	2, 8

valence electron	8 ⓘ

trefn yr electronnau	[He] 2s² 2p⁶ⓘ 1s² 2s² 2p⁶

Cyflwr ocsidiad
Electronegatifedd	28.31 eV/particle 0.38439
Electrophilicity Index
cyflwr sylfaenol mater

cyflwr mater	Gas
gaseous state of matter	Monoatomic
Boiling Point	27.104 K
Melting Point	24.56 K
critical pressure	2.6786 MPa
critical temperature	44.492 K
triple point	24.5561 K 43.37 kPa
appearance
lliw	Colorless #ff1493 #b3e3f5 #b3e3f5
appearance	colorless gas exhibiting an orange-red glow when placed in a high voltage electric field
Mynegrif plygiant	1.000067
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
molar heat capacity	20.786 J/(mol K)
Specific Heat Capacity	1.03 J/(g⋅K)
heat capacity ratio	5/3
electrical properties
type
dargludedd trydanol
Gwrthedd
superconductivity
magnetism
type	diamagnetic
magnetic susceptibility (Mass)	-0.0000000041 m³/Kg
magnetic susceptibility (Molar)	-0.0000000000827 m³/mol
magnetic susceptibility (Volume)	-0.00000000369
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal Structure	Face Centered Cubic (FCC)
lattice constant	4.43 Å
Lattice Angles	π/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound	936 m/s
classification
Category	Noble gases, Noble gases
CAS Group	VIII
IUPAC Group	VIIIA
Glawe Number	2
Mendeleev Number	113
Pettifor Number	2
Geochemical Class	volatile
Goldschmidt classification	atmophile

other

Gas Basicity	174.4 kJ/mol
polarizability	2.6611 ± 0.00003 a₀
C6 Dispersion Coefficient	6.2 a₀ 6.91 a₀
allotrope
Neutron cross section	0.04
Neutron Mass Absorption	0.00059
quantum number	1S0
space group	225 (Fm_3m)

Isotopes of Neon

Stable Isotopes	3
Unstable Isotopes	17
Natural Isotopes	3

¹⁵Ne

Rhif màs	15
neutron number	5
Relative Atomic Mass	15.043172977 ± 0.000071588 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	770 ± 300 ys
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	2014
parity	-

decay mode	intensity
2p (2-proton emission)	100%

¹⁶Ne

Rhif màs	16
neutron number	6
Relative Atomic Mass	16.02575086 ± 0.000021986 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1977
parity	+

decay mode	intensity
2p (2-proton emission)	100%

¹⁷Ne

Rhif màs	17
neutron number	7
Relative Atomic Mass	17.017713962 ± 0.00000038 Da
g-factor	1.5746 ± 0.0028
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	109.2 ± 0.6 ms
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1963
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	94.4%
β⁺α (β⁺-delayed α emission)	3.51%
B+pA	0.014%

¹⁸Ne

Rhif màs	18
neutron number	8
Relative Atomic Mass	18.005708696 ± 0.00000039 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	1,664.2 ± 0.47 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1954
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁹Ne

Rhif màs	19
neutron number	9
Relative Atomic Mass	19.001880906 ± 0.000000171 Da
g-factor	-3.7703 ± 0.00014
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	17.2569 ± 0.0019 s
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1939
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

²⁰Ne

Rhif màs	20
neutron number	10
Relative Atomic Mass	19.99244017525 ± 0.00000000165 Da
g-factor	0
natural abundance	90.48 ± 0.03
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1913
parity	+

²¹Ne

Rhif màs	21
neutron number	11
Relative Atomic Mass	20.993846685 ± 0.000000041 Da
g-factor	-0.44113333333333 ± 0.00002
natural abundance	0.27 ± 0.01
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1928
parity	+

²²Ne

Rhif màs	22
neutron number	12
Relative Atomic Mass	21.991385113 ± 0.000000018 Da
g-factor	0
natural abundance	9.25 ± 0.03
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1913
parity	+

²³Ne

Rhif màs	23
neutron number	13
Relative Atomic Mass	22.994466905 ± 0.000000112 Da
g-factor	-0.43176 ± 0.0004
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	37.15 ± 0.03 s
spin	5/2
nuclear quadrupole moment	0.145 ± 0.013
dyddiad darganfod	1936
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁴Ne

Rhif màs	24
neutron number	14
Relative Atomic Mass	23.993610649 ± 0.00000055 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	3.38 ± 0.02 m
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1956
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁵Ne

Rhif màs	25
neutron number	15
Relative Atomic Mass	24.997814797 ± 0.000031181 Da
g-factor	-2.012 ± 0.001
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	602 ± 8 ms
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1970
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁶Ne

Rhif màs	26
neutron number	16
Relative Atomic Mass	26.000516496 ± 0.000019784 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	197 ± 2 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1970
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.13%

²⁷Ne

Rhif màs	27
neutron number	17
Relative Atomic Mass	27.007569462 ± 0.000097445 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	30.9 ± 1.1 ms
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1977
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	2%
2n (2-neutron emission)

²⁸Ne

Rhif màs	28
neutron number	18
Relative Atomic Mass	28.012130767 ± 0.000135339 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	18.8 ± 0.2 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1979
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	12%
2n (2-neutron emission)	3.7%

²⁹Ne

Rhif màs	29
neutron number	19
Relative Atomic Mass	29.019753 ± 0.0001605 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	14.7 ± 0.4 ms
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1985
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	28%
2n (2-neutron emission)	4%

³⁰Ne

Rhif màs	30
neutron number	20
Relative Atomic Mass	30.024992235 ± 0.000271875 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	7.22 ± 0.18 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1985
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	13%
2n (2-neutron emission)	8.9%

³¹Ne

Rhif màs	31
neutron number	21
Relative Atomic Mass	31.033474816 ± 0.000285772 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	3.4 ± 0.8 ms
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1996
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

³²Ne

Rhif màs	32
neutron number	22
Relative Atomic Mass	32.03972 ± 0.00054 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	3.5 ± 0.9 ms
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1990
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

³³Ne

Rhif màs	33
neutron number	23
Relative Atomic Mass	33.049523 ± 0.000644 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	7/2
nuclear quadrupole moment
dyddiad darganfod
parity	-

decay mode	intensity
n (neutron emission)

³⁴Ne

Rhif màs	34
neutron number	24
Relative Atomic Mass	34.056728 ± 0.000551 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	2002
parity	+

decay mode	intensity
β⁻ (β⁻ decay)
2n (2-neutron emission)
β⁻ n (β⁻-delayed neutron emission)

hanes

darganfyddwr neu ddyfeisiwr	Sir William Ramsey, M.W. Travers
man darganfod	England
dyddiad darganfod	1898
geirdarddiad	Greek: neos (new).
ynganiad	NEE-on (Saesneg)

source

Abundance
Abundance in Earth's crust	0.005 mg/kg
natural abundance (cefnfor)	0.00012 mg/L
natural abundance (corff dynol)
natural abundance (Awyrfaen)
natural abundance (Haul)	0.1 %
Abundance in Universe	0.13 %

Nuclear Screening Constants

1	s	0.3579
2	p	4.2416
2	s	4.2416

Neó on ChemicalAid

Australian Educational Vocabulary ID	scot/3546
Brockhaus Enzyklopädie online ID	neon-20
ChEBI ID	33310
ChemSpider ID	22377
DSSTOX compound identifier	DTXCID2047642
DSSTox substance ID	DTXSID0064678
Den Store Danske ID	neon
Dynodwr Drugbank (Alberta)	11589
ECHA Substance Infocard ID	100.028.282
French Vikidia ID	Néon
GND	4171442-8
Golden ID	Neon-RXRV
Great Russian Encyclopedia Online ID	2260122
InChI	InChI=1S/Ne
InChIKey	GKAOGPIIYCISHV-UHFFFAOYSA-N
Italian Vikidia ID	Neon
Namuwiki ID	네온
National Library of Israel J9U ID	987007565537805171
OmegaWiki Defined Meaning	159119
OpenAlex ID	C522602180
Probes And Drugs ID	PD060960
PubChem CID	23935
Rhif Cofrestru CAS	7440-01-9
RxNorm ID	7301
Römpp online ID	RD-14-00763
Spanish Vikidia ID	Neón
Store norske leksikon ID	neon
UNII	4VB4Y46AHD
USGS Thesaurus ID	1517
WordNet 3.1 Synset ID	14670330-n
ZVG number	7100
dynodwr AAT	300180393
dynodwr BnF	121448923
dynodwr Encyclopædia Britannica Online	science/neon-chemical-element
dynodwr Encyclopædia Universalis	neon
dynodwr Freebase	/m/025s4r0
dynodwr HSDB	7916
dynodwr ICSC	0627
dynodwr KBpedia	Neon
dynodwr LCAuth	sh85090790
dynodwr MeSH	D009356
dynodwr NDL	00575299
dynodwr PSH	5817
dynodwr Quora	Neon
dynodwr Treccani	neon
dynodwr YSO	20228
dynodwr yn thesawrws y BNCF	37399

Neó (Ne)

Nodwedd Ffisegol

Nodwedd Gemegol

other

Isotopes of Neon

15Ne

16Ne

17Ne

18Ne

19Ne

20Ne

21Ne

22Ne

23Ne

24Ne

25Ne

26Ne

27Ne

28Ne

29Ne

30Ne

31Ne

32Ne

33Ne

34Ne

hanes

source

Nuclear Screening Constants

¹⁵Ne

¹⁶Ne

¹⁷Ne

¹⁸Ne

¹⁹Ne

²⁰Ne

²¹Ne

²²Ne

²³Ne

²⁴Ne

²⁵Ne

²⁶Ne

²⁷Ne

²⁸Ne

²⁹Ne

³⁰Ne

³¹Ne

³²Ne

³³Ne

³⁴Ne