Helioa (He)

2 zenbaki atomikoa duen elementu kimikoa

Atomic Number	2
Atomic Weight	4.002602
masa-zenbaki	4

Group	18
Period	1
Block	s

protoi	2 p⁺
neutroi	2 n⁰
elektroi	2 e^-

Animated Bohrren eredu atomikoa of He (Helioa)

Propietate Fisiko

Erradio Atomiko	120 pm 134 pm
bolumen molar	31,8 cm³/mol
Erradio Kobalente	46 pm 28 pm
Metallic Radius	122 pm
Erradio ioniko
Crystal Radius
Van der Waalsen erradio	140 pm 140 pm 153 pm 236,2 pm
dentsitatea	0,000164 g/cm³

Magnitude Fisiko

energia

proton affinity	177,8 kJ/mol
Afinitate elektroniko	−19,7 eV/particle
ionizazio energia	24,587387936 eV/particle 54,41776311 eV/particle

Irakite-entalpia	0,08 kJ/mol
urtze-entalpia
formazio entalpia estandarra
elektroi

elektroi geruza	2

balentzia-elektroi	2 ⓘ

electron configuration	1s²ⓘ

Oxidazio-egoera
Elektronegatibotasun	24,59 eV/particle 0.442712
Electrophilicity Index	0,0674191963846371 eV/particle
materiaren funtsezko egoera

materiaren egoera	Gas
materiaren egoera gaseoso	Monoatomic
Boiling Point	4,222 K
Melting Point
critical pressure	0,22746 MPa
critical temperature	5,195 K
Puntu hirukoitz	2,177 K 5,043 kPa
appearance
kolore	Colorless #ffc0cb #d9ffff #d9ffff
appearance	colorless gas, exhibiting a red-orange glow when placed in a high-voltage electric field
errefrakzio-indize	1,000035
thermodynamic material property
Thermal Conductivity	0,152 W/(m K)
Bero-dilatazio
molar heat capacity	20,786 J/(mol K)
Specific Heat Capacity	5,193 J/(g⋅K)
indize adiabatiko	5/3
electrical properties
type
Eroankortasun elektriko
Erresistibitate elektriko
Supereroankortasun
Magnetismo
type	diamagnetic
suszeptibilitate magnetiko (Mass)	−0,0000000059 m³/Kg
suszeptibilitate magnetiko (Molar)	−0,0000000000236 m³/mol
suszeptibilitate magnetiko (Volume)	−0,00000000105
magnetic ordering
Curieren tenperatura
Néel temperature
egitura
Crystal Structure	Face Centered Cubic (HEX)
lattice constant	3,57 Å
Lattice Angles	π/2, π/2, π/2
materialen propietate mekaniko
Gogortasun
konprimagarritasun-modulu
Zizaila modulua
Youngen modulu
Poissonen modulu
Soinuaren lastertasun	970 m/s
classification
Category	Noble gases, Noble gases
CAS Group	VIII
IUPAC Group	VIIIA
Glawe Number	1
Mendeleev Number	112
Pettifor Number	1
Geochemical Class	volatile
Goldschmidt classification	atmophile

beste batzuk

Gas Basicity	148,5 kJ/mol
polarizability	1,38375 ± 0,00002 a₀
C6 Dispersion Coefficient	1,42 a₀ 1,47 a₀
allotrope
Neutron cross section	0,007
Neutron Mass Absorption	0,00001
zenbaki kuantiko	1S0
talde espazial	225 (Fm_3m)

Isotopes of Helium

Stable Isotopes	2
Unstable Isotopes	6
Natural Isotopes	2

³He

masa-zenbaki	3
neutron number	1
Atomo-Masa Erlatibo	3,01602932197 ± 0,00000000006 Da
g-factor	−4,25525062 ± 0,00000006
natural abundance	0,0002 ± 0,0002
desintegrazio erradioaktibo	isotopo egonkor
Semidesintegrazio-periodo	Not Radioactive ☢️
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1934
parity	+

⁴He

masa-zenbaki	4
neutron number	2
Atomo-Masa Erlatibo	4,00260325413 ± 0,00000000016 Da
g-factor	0
natural abundance	99,9998 ± 0,0002
desintegrazio erradioaktibo	isotopo egonkor
Semidesintegrazio-periodo	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1908
parity	+

⁵He

masa-zenbaki	5
neutron number	3
Atomo-Masa Erlatibo	5,012057224 ± 0,00002147 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	602 ± 22 ys
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1937
parity	-

decay mode	intensity
n (neutron emission)	100%

⁶He

masa-zenbaki	6
neutron number	4
Atomo-Masa Erlatibo	6,018885889 ± 0,000000057 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	806,92 ± 0,24 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1936
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ d (β⁻-delayed deuteron emission)	0.000278%

⁷He

masa-zenbaki	7
neutron number	5
Atomo-Masa Erlatibo	7,027990652 ± 0,000008115 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,51 ± 0,07 zs
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1967
parity

decay mode	intensity
n (neutron emission)	100%

⁸He

masa-zenbaki	8
neutron number	6
Atomo-Masa Erlatibo	8,033934388 ± 0,000000095 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	119,5 ± 1,5 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1965
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	16%
β⁻ t (β⁻-delayed triton emission)	0.9%

⁹He

masa-zenbaki	9
neutron number	7
Atomo-Masa Erlatibo	9,043946414 ± 0,000050259 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,5 ± 2,3 zs
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1987
parity

decay mode	intensity
n (neutron emission)	100%

¹⁰He

masa-zenbaki	10
neutron number	8
Atomo-Masa Erlatibo	10,052815306 ± 0,000099676 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	260 ± 40 ys
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1994
parity	+

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

historia

aurkitzailea edo asmatzailea	Sir William Ramsey, Nils Langet, P.T.Cleve
aurkikuntzaren lekua	Scotland/Sweden
aurkikuntza-data	1895
etimologia	Greek: hêlios (sun).
pronunciation	HEE-li-em (ingelesa)

source

Abundance
Abundance in Earth's crust	0,008 mg/kg
natural abundance (ozeano)	0,000007 mg/L
natural abundance (gizakiaren gorputza)
natural abundance (Meteoroide)
natural abundance (Eguzkia)	23 %
Abundance in Universe	23 %

Nuclear Screening Constants

0.3125

Helioa on ChemicalAid

ATC kodea	V03AN03
Australian Educational Vocabulary ID	scot/3528
BNCF identifikatzailea	19752
BnF	11978648w
Brockhaus Enzyklopädie online ID	helium-20
CAB ID	178029
CAS zenbakia	7440-59-7
ChEBI-ren identifikatzailea	30217
ChEMBL-en identifikatzailea	CHEMBL1796997
ChemSpider-ren identifikatzailea	22423
Common Procurement Vocabulary	24111300
DSSTOX compound identifier	DTXCID5016402
DSSTox substance ID	DTXSID7036402
De Agostini ID	èlio
Den Store Danske ID	helium
DrugBank ID	09155
ECHA Substance Infocard ID	100.028.334
Encyclopædia Britannica Online-ren identifikatzailea	science/helium-chemical-element
Encyclopædia Universalis ID	helium
E zenbakia	E939
Freebase-ren identifikadorea	/m/025rt79
French Vikidia ID	Hélium
GND identifikadorea	4132459-6
Golden ID	Helium-K8NB
Great Russian Encyclopedia Online ID	2348591
HSDB ID	553
ICSC ID	0603
InChI	InChI=1S/He
InChIKey	SWQJXJOGLNCZEY-UHFFFAOYSA-N
Italian Vikidia ID	Elio
KBpedia ID	Helium
Klexikon article ID	Helium
Krugosvet article	nauka_i_tehnika/himiya/GELI.html
LCCN	sh85060043
MeSH identifikadorea	D006371
Mindat mineral ID	25563
NALT ID	44987
NDF-RT ID	N0000147379
NDL-en identifikatzailea	00563132
NE.se ID	helium
NKC-ren identifikatzailea	ph503003
Namuwiki ID	헬륨
National Library of Israel J9U ID	987007555644805171
OmegaWikiren esanahiaren definizioa	7296
Online PWN Encyclopedia ID	3910758
OpenAlex ID	C546029482
OpenAlex ID	C2991909631
PSH identifikatzailea	5816
Probes And Drugs ID	PD009020
PubChem-en identifikatzailea	23987
Quora gaiaren identifikadorea	Helium
RxNorm ID	5140
Römpp online ID	RD-08-00783
Spanish Vikidia ID	Helio
Store norske leksikon ID	helium
Treccani ID	elio
U.S. National Archives Identifier	10640583
UMLS CUI	C0018880
UNII	206GF3GB41
USGS Thesaurus ID	1470
WordNet 3.1 Synset ID	14664099-n
World of Physics ID	Helium
YSO ID	14499
ZVG number	7020

Helioa (He)

Propietate Fisiko

Magnitude Fisiko

beste batzuk

Isotopes of Helium

3He

4He

5He

6He

7He

8He

9He

10He

historia

source

Nuclear Screening Constants

³He

⁴He

⁵He

⁶He

⁷He

⁸He

⁹He

¹⁰He