Никель (Ni)

chemical element with symbol Ni and atomic number 28

Atomic Number	28
Atomic Weight	58.6934
mass number	58

Group	10
Period	4
Block	d

Протон	28 p⁺
Нейтрон	30 n⁰
Электрон	28 e^-

Physical Property

Атомдук Радиус	135 pm 229 pm
molar volume	6,6 cm³/mol
covalent radius	110 pm 101 pm 101 pm 135 pm 124 pm
Metallic Radius	115 pm 124 pm
ionic radius	55 pm 49 pm 63 pm 69 pm 56 pm 60 pm 48 pm
Crystal Radius	69 pm 63 pm 77 pm 83 pm 70 pm 74 pm 62 pm
Van der Waals radius	200 pm 197 pm 222 pm 283,4 pm
density	8,9 g/cm³ 7 810 kg/m³

Chemical Property

энергия

proton affinity	737 kJ/mol
electron affinity	1,156 eV/particle
ionization energy	7,639877 eV/particle 18,168837 eV/particle 35,19 eV/particle 54,9 eV/particle 76,06 eV/particle 108 eV/particle 132 eV/particle 162 eV/particle 193,2 eV/particle 224,7 eV/particle 319,53 eV/particle 351,63 eV/particle 384,55 eV/particle 429,32 eV/particle 462,8 eV/particle 495,4 eV/particle 571,1 eV/particle 607,02 eV/particle 1 541,05 eV/particle 1 646 eV/particle 1 758 eV/particle 1 880 eV/particle 2 008,1 eV/particle 2 130,46 eV/particle 2 295,6 eV/particle 2 399,259 eV/particle 10 288,8858 eV/particle 10 775,386 eV/particle

enthalpy of vaporization	378,6 kJ/mol
enthalpy of fusion	17,61 kJ/mol
standard enthalpy of formation	430,1 kJ/mol
Электрон

electron shell	2, 8, 16, 2

valence electron	2 ⓘ

electron configuration	[Ar] 3d⁸ 4s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸ 4s²

oxidation number	-2, -1, 0, 1, 2, 3, 4
electronegativity	11,13 eV/particle 0.1472068 1.91
Electrophilicity Index	1,4915353151966217 eV/particle
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point	3 186,15 K
Melting Point	1 728,15 K
critical pressure
critical temperature
triple point
appearance
Түс –	Gray #a52a2a #50d050 #50d050
appearance	lustrous, metallic, and silver with a gold tinge
refractive index
thermodynamic material property
Thermal Conductivity	90,9 W/(m K)
thermal expansion	0,0000134 1/K
molar heat capacity	26,07 J/(mol K)
Specific Heat Capacity	0,444 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
electrical conductivity	14 MS/m
electrical resistivity	0,00000007000000000002 m Ω
superconductivity
Магнетизм
type	ferromagnetic
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature	631 K
Néel temperature
түзүм
Crystal Structure	Face Centered Cubic (FCC)
lattice constant	3,52 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
hardness	700 MPa 4 MPa 638 MPa
bulk modulus	180 GPa
shear modulus	76 GPa
Young's modulus	200 GPa
Poisson's ratio	0,31
speed of sound	4 970 m/s
classification
Category	Transition metals, Transition metals
CAS Group	VIIIA
IUPAC Group	VIII
Glawe Number	69
Mendeleev Number	67
Pettifor Number	67
Geochemical Class	first series transition metal
Литофиль элементтери	siderophile

other

Gas Basicity	714,1 kJ/mol
polarizability	49 ± 3 a₀
C6 Dispersion Coefficient	373 a₀ 393 a₀
allotrope
Neutron cross section	4,5
Neutron Mass Absorption	0,0026
Кванттык сандар	3F4
space group	225 (Fm_3m)

Isotopes of Nickel

Stable Isotopes	4
Unstable Isotopes	31
Natural Isotopes	5

⁴⁸Ni

mass number	48
neutron number	20
relative atomic mass	48,019515 ± 0,000455 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	2,8 ± 0,8 ms
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	2000
parity	+

decay mode	intensity
2p (2-proton emission)	70%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	30%
β⁺ p (β⁺-delayed proton emission)

⁴⁹Ni

mass number	49
neutron number	21
relative atomic mass	49,009157 ± 0,000644 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	7,5 ± 1 ms
Спин	7/2
nuclear quadrupole moment
time of discovery or invention	1996
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	83.4%

⁵⁰Ni

mass number	50
neutron number	22
relative atomic mass	49,996286 ± 0,000537 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	18,5 ± 1,2 ms
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1994
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	73%
2p (2-proton emission)	14%

⁵¹Ni

mass number	51
neutron number	23
relative atomic mass	50,987493 ± 0,000537 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	23,8 ± 0,2 ms
Спин	7/2
nuclear quadrupole moment
time of discovery or invention	1987
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	87.2%
2p (2-proton emission)	0.5%

⁵²Ni

mass number	52
neutron number	24
relative atomic mass	51,975781 ± 0,000089 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	41,8 ± 1 ms
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1987
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	31.1%

⁵³Ni

mass number	53
neutron number	25
relative atomic mass	52,96819 ± 0,000027 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	55,2 ± 0,7 ms
Спин	7/2
nuclear quadrupole moment
time of discovery or invention	1976
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	22.7%

⁵⁴Ni

mass number	54
neutron number	26
relative atomic mass	53,957833 ± 0,000005 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	114,1 ± 0,3 ms
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1977
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)

⁵⁵Ni

mass number	55
neutron number	27
relative atomic mass	54,951329846 ± 0,000000757 Da
g-factor	0,28 ± 0,0085714285714286
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	203,9 ± 1,3 ms
Спин	7/2
nuclear quadrupole moment
time of discovery or invention	1972
parity	-

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

⁵⁶Ni

mass number	56
neutron number	28
relative atomic mass	55,942127761 ± 0,000000428 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	6,075 ± 0,01 d
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1952
parity	+

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

⁵⁷Ni

mass number	57
neutron number	29
relative atomic mass	56,939791394 ± 0,000000608 Da
g-factor	-0,53166666666667 ± 0,00093333333333333
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	35,6 ± 0,06 h
Спин	3/2
nuclear quadrupole moment
time of discovery or invention	1938
parity	-

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

⁵⁸Ni

mass number	58
neutron number	30
relative atomic mass	57,93534165 ± 0,000000374 Da
g-factor	0
natural abundance	68,0769 ± 0,019
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1921
parity	+

decay mode	intensity
2β⁺ (double β⁺ decay)

⁵⁹Ni

mass number	59
neutron number	31
relative atomic mass	58,934345442 ± 0,000000376 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	81 ± 5 ky
Спин	3/2
nuclear quadrupole moment
time of discovery or invention	1951
parity	-

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

⁶⁰Ni

mass number	60
neutron number	32
relative atomic mass	59,930785129 ± 0,000000378 Da
g-factor	0
natural abundance	26,2231 ± 0,015
Радиоактивдүүлүк	stable isotope
half-life	Not Radioactive ☢️
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1921
parity	+

⁶¹Ni

mass number	61
neutron number	33
relative atomic mass	60,931054819 ± 0,000000381 Da
g-factor
natural abundance	1,1399 ± 0,0013
Радиоактивдүүлүк	stable isotope
half-life	Not Radioactive ☢️
Спин	3/2
nuclear quadrupole moment	0,162 ± 0,015
time of discovery or invention	1934
parity	-

⁶²Ni

mass number	62
neutron number	34
relative atomic mass	61,928344753 ± 0,000000455 Da
g-factor	0
natural abundance	3,6345 ± 0,004
Радиоактивдүүлүк	stable isotope
half-life	Not Radioactive ☢️
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1934
parity	+

⁶³Ni

mass number	63
neutron number	35
relative atomic mass	62,929669021 ± 0,000000457 Da
g-factor	0,992 ± 0,01
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	101,2 ± 1,5 y
Спин	1/2
nuclear quadrupole moment	0
time of discovery or invention	1951
parity	-

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

⁶⁴Ni

mass number	64
neutron number	36
relative atomic mass	63,927966228 ± 0,000000497 Da
g-factor	0
natural abundance	0,9256 ± 0,0019
Радиоактивдүүлүк	stable isotope
half-life	Not Radioactive ☢️
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1935
parity	+

⁶⁵Ni

mass number	65
neutron number	37
relative atomic mass	64,930084585 ± 0,000000518 Da
g-factor	0,276 ± 0,024
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	2,5175 ± 0,0005 h
Спин	5/2
nuclear quadrupole moment
time of discovery or invention	1946
parity	-

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

⁶⁶Ni

mass number	66
neutron number	38
relative atomic mass	65,929139333 ± 0,0000015 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	54,6 ± 0,3 h
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1948
parity	+

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

⁶⁷Ni

mass number	67
neutron number	39
relative atomic mass	66,931569413 ± 0,0000031 Da
g-factor	1,202 ± 0,01
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	21 ± 1 s
Спин	1/2
nuclear quadrupole moment	0
time of discovery or invention	1978
parity	-

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

⁶⁸Ni

mass number	68
neutron number	40
relative atomic mass	67,931868787 ± 0,0000032 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	29 ± 2 s
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1977
parity	+

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

⁶⁹Ni

mass number	69
neutron number	41
relative atomic mass	68,935610267 ± 0,000004 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	11,4 ± 0,3 s
Спин	9/2
nuclear quadrupole moment
time of discovery or invention	1984
parity	+

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

⁷⁰Ni

mass number	70
neutron number	42
relative atomic mass	69,9364313 ± 0,000002301 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	6 ± 0,3 s
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1987
parity	+

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

⁷¹Ni

mass number	71
neutron number	43
relative atomic mass	70,940518962 ± 0,000002401 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	2,56 ± 0,03 s
Спин	9/2
nuclear quadrupole moment
time of discovery or invention	1987
parity	+

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

⁷²Ni

mass number	72
neutron number	44
relative atomic mass	71,941785924 ± 0,000002401 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	1,57 ± 0,05 s
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1987
parity	+

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

⁷³Ni

mass number	73
neutron number	45
relative atomic mass	72,946206681 ± 0,000002601 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	840 ± 30 ms
Спин	9/2
nuclear quadrupole moment
time of discovery or invention	1987
parity	+

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

⁷⁴Ni

mass number	74
neutron number	46
relative atomic mass	73,947718 ± 0,000215 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	507,7 ± 4,6 ms
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1987
parity	+

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

⁷⁵Ni

mass number	75
neutron number	47
relative atomic mass	74,952506 ± 0,000215 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	331,6 ± 3,2 ms
Спин	9/2
nuclear quadrupole moment
time of discovery or invention	1992
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	10%

⁷⁶Ni

mass number	76
neutron number	48
relative atomic mass	75,954707 ± 0,000322 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	234,6 ± 2,7 ms
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1995
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	14%

⁷⁷Ni

mass number	77
neutron number	49
relative atomic mass	76,959903 ± 0,000429 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	158,9 ± 4,2 ms
Спин	9/2
nuclear quadrupole moment
time of discovery or invention	1995
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	26%
2n (2-neutron emission)

⁷⁸Ni

mass number	78
neutron number	50
relative atomic mass	77,962555 ± 0,000429 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	122,2 ± 5,1 ms
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	1995
parity	+

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

⁷⁹Ni

mass number	79
neutron number	51
relative atomic mass	78,969769 ± 0,000537 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	44 ± 8 ms
Спин	5/2
nuclear quadrupole moment
time of discovery or invention	2010
parity	+

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

⁸⁰Ni

mass number	80
neutron number	52
relative atomic mass	79,975051 ± 0,000644 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life	30 ± 22 ms
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	2014
parity	+

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

⁸¹Ni

mass number	81
neutron number	53
relative atomic mass	80,982727 ± 0,000751 Da
g-factor
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life
Спин	3/2
nuclear quadrupole moment
time of discovery or invention	2017
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

⁸²Ni

mass number	82
neutron number	54
relative atomic mass	81,988492 ± 0,000859 Da
g-factor	0
natural abundance
Радиоактивдүүлүк	☢️ Радиоактивдүү элементтер —
half-life
Спин	0
nuclear quadrupole moment	0
time of discovery or invention	2017
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

тарых

discoverer or inventor	Axel Cronstedt
location of discovery	Sweden
time of discovery or invention	1751
Этимология	German: kupfernickel (false copper).
pronunciation	NIK-l (англисче)

source

Abundance
Abundance in Earth's crust	84 mg/kg
natural abundance (Океан)	0,00056 mg/L
natural abundance (human body)	0,00001 %
natural abundance (meteoroid)	1,3 %
natural abundance (Күн)	0,008 %
Abundance in Universe	0,006 %

Nuclear Screening Constants

1	s	0.6474
2	p	3.9048
2	s	7.7874
3	d	15.4705
3	p	13.915
3	s	13.039
4	s	22.2892

Никель on ChemicalAid

AGROVOC ID	c_5172
Art & Architecture Thesaurus ID	300011028
Australian Educational Vocabulary ID	scot/3548
BNCF Thesaurus ID	20098
Bibliothèque nationale de France ID	119445481
Brockhaus Enzyklopädie online ID	nickel
CAB ID	224368
CA PROP 65 ID	nickel-and-nickel-compounds
CAS Registry Number	7440-02-0
Canadian Encyclopedia article ID	nickel
ChEBI ID	28112
ChemSpider ID	910
DSSTOX compound identifier	DTXCID80925
DSSTox substance ID	DTXSID2020925
Den Store Danske ID	nikkel
ECHA Substance Infocard ID	100.028.283
Encyclopædia Britannica Online ID	science/nickel-chemical-element
Encyclopædia Universalis ID	nickel
EuroVoc ID	2056
Freebase ID	/m/025s4r7
French Vikidia ID	Nickel
GEMET ID	5589
GND ID	4042133-8
Great Russian Encyclopedia Online ID	2268050
HCIS ID	3204
HCIS ID	3214
HSDB ID	1096
ICSC ID	0062
IEDB Epitope ID	113234
InChI	InChI=1S/Ni
InChIKey	PXHVJJICTQNCMI-UHFFFAOYSA-N
KBpedia ID	Nickel
Krugosvet article	nauka_i_tehnika/tehnologiya_i_promyshlennost/NIKEL.html
Latvian National Encyclopedia Online ID	102889
Library of Congress authority ID	sh85091772
MeSH descriptor ID	D009532
NDF-RT ID	N0000022900
NDL Authority ID	00568497
NKCR AUT ID	ph123294
National Library of Israel J9U ID	987007531440305171
National Library of Latvia ID	000216326
Nomisma ID	ni
OmegaWiki Defined Meaning	2509
OpenAlex ID	C504270822
PACTOLS thesaurus ID	pcrtp5MND6qfnb
PSH ID	5782
PubChem CID	935
Quora topic ID	NI
RxNorm ID	1311629
STW Thesaurus for Economics ID	14305-1
Spanish Cultural Heritage thesauri ID	materias/1000925
Spanish Vikidia ID	Níquel
Store medisinske leksikon ID	nikkel
Store norske leksikon ID	nikkel
Treccani ID	nichel
U.S. National Archives Identifier	10647023
UK Archival Thesaurus ID	f2/mt225/4347/19044
UK Parliament thesaurus ID	11940
UMLS CUI	C0028013
UNII	7OV03QG267
USGS Thesaurus ID	1520
Wolfram Language entity code	Entity["Mineral", "Nickel"]
WordNet 3.1 Synset ID	14670788-n
YSO ID	19926
ZVG number	8230

Никель (Ni)

Physical Property

Chemical Property

other

Isotopes of Nickel

48Ni

49Ni

50Ni

51Ni

52Ni

53Ni

54Ni

55Ni

56Ni

57Ni

58Ni

59Ni

60Ni

61Ni

62Ni

63Ni

64Ni

65Ni

66Ni

67Ni

68Ni

69Ni

70Ni

71Ni

72Ni

73Ni

74Ni

75Ni

76Ni

77Ni

78Ni

79Ni

80Ni

81Ni

82Ni

тарых

source

Nuclear Screening Constants

⁴⁸Ni

⁴⁹Ni

⁵⁰Ni

⁵¹Ni

⁵²Ni

⁵³Ni

⁵⁴Ni

⁵⁵Ni

⁵⁶Ni

⁵⁷Ni

⁵⁸Ni

⁵⁹Ni

⁶⁰Ni

⁶¹Ni

⁶²Ni

⁶³Ni

⁶⁴Ni

⁶⁵Ni

⁶⁶Ni

⁶⁷Ni

⁶⁸Ni

⁶⁹Ni

⁷⁰Ni

⁷¹Ni

⁷²Ni

⁷³Ni

⁷⁴Ni

⁷⁵Ni

⁷⁶Ni

⁷⁷Ni

⁷⁸Ni

⁷⁹Ni

⁸⁰Ni

⁸¹Ni

⁸²Ni