Gadolinium (Gd)

element with the atomic number of 64

Atomic Number	64
Atomic Weight	157.25
Massagetal	158

Group
Period	6
Block	f

proton	64 p⁺
neutron	94 n⁰
elektron	64 e^-

Physical Property

Atoomradius	180 pm 277 pm
molar volume	19,9 cm³/mol
Covalent Radius	169 pm 135 pm 132 pm 196 pm
Metallic Radius
Ioonradius	93,8 pm 100 pm 105,3 pm 110,7 pm
Crystal Radius	107,8 pm 114 pm 119,3 pm 124,7 pm
Van der Waals radius	234 pm 271 pm 336,8 pm
density	7,9 g/cm³ 7 400 kg/m³

Chemical Property

{ERROR}

energie

proton affinity
electron affinity
ionization energy	6,149796 eV/particle 12,09 eV/particle 20,63 eV/particle 44 eV/particle 64,76 eV/particle 89 eV/particle 106 eV/particle 123 eV/particle 144 eV/particle 165 eV/particle 183 eV/particle 213 eV/particle 246 eV/particle 268 eV/particle 288 eV/particle 319 eV/particle 352 eV/particle 380 eV/particle 565 eV/particle 601 eV/particle 639 eV/particle 680 eV/particle 719 eV/particle 761 eV/particle 810 eV/particle 851 eV/particle 895 eV/particle 937 eV/particle 1 100 eV/particle 1 142 eV/particle 1 189 eV/particle 1 233 eV/particle 1 321 eV/particle 1 368 eV/particle 1 481 eV/particle 1 532,35 eV/particle 2 621 eV/particle 2 720 eV/particle 2 827 eV/particle 2 941 eV/particle 3 050 eV/particle 3 160 eV/particle 3 312 eV/particle 3 424 eV/particle 3 550 eV/particle 3 660 eV/particle 3 980 eV/particle 4 080 eV/particle 4 191 eV/particle 4 294 eV/particle 4 578 eV/particle 4 693 eV/particle 4 914 eV/particle 5 025 eV/particle 11 273 eV/particle 11 552 eV/particle 11 861 eV/particle 12 147 eV/particle 13 183 eV/particle 13 521 eV/particle 13 943 eV/particle 14 224,57 eV/particle 57 783,9 eV/particle 59 065,52 eV/particle

Verdampingswarmte	398 kJ/mol
smeltingswarmte
Vormingsentalpie	397,5 kJ/mol
elektron

Elektronskil	2, 8, 18, 25, 9, 2

Valenselektrone	2 ⓘ

elektronkonfigurasie	[Xe] 4f⁷ 5d¹ 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f⁷ 5d¹ 6s²

Oksidasietoestand	0, 1, 2, 3
Elektronegatiwiteit	0.1944 1.2
Electrophilicity Index
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point	3 546,15 K
Melting Point	1 586,15 K
critical pressure
critical temperature
triple point
appearance
kleur	Black #ff1493 #45ffc7 #45ffc7
appearance	silvery white
Brekingsindeks
thermodynamic material property
Thermal Conductivity
thermal expansion	0,0000094 1/K
molar heat capacity	37,03 J/(mol K)
Specific Heat Capacity	0,236 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
Geleidingsvermoë	0,77 MS/m
Elektriese resistiwiteit	0,0000013 Ω*m
superconductivity
Magnetisme
type	ferromagnetic
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature	292 K
Néel temperature
structure
Crystal Structure	{ERROR}
lattice constant	3,64 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hardness	570 MPa
Massamodulus	38 GPa
Skuifmodulus	22 GPa
Young se modulus	55 GPa
Poisson se verhouding	0,26
Spoed van klank	2 680 m/s
classification
Category	Actinides, Lanthanides
CAS Group
IUPAC Group
Glawe Number	26
Mendeleev Number	27
Pettifor Number	27
Geochemical Class	rare earth & related
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	158 ± 20 a₀
C6 Dispersion Coefficient	2 340 a₀
allotrope
Neutron cross section	49 000
Neutron Mass Absorption	7,3
quantum number	9D2
Ruimtegroep	194 (P63/mmc)

Isotopes of Gadolinium

Stable Isotopes	5
Unstable Isotopes	35
Natural Isotopes	7

¹³³Gd

Massagetal	133
neutron number	69
Relative Atomic Mass	132,961288 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	5/2
nuclear quadrupole moment
ontdekkingsdatum
parity	+

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

¹³⁴Gd

Massagetal	134
neutron number	70
Relative Atomic Mass	133,955416 ± 0,000429 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum
parity	+

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

¹³⁵Gd

Massagetal	135
neutron number	71
Relative Atomic Mass	134,952496 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1,1 ± 0,2 s
spin	5/2
nuclear quadrupole moment
ontdekkingsdatum	1996
parity	+

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

¹³⁶Gd

Massagetal	136
neutron number	72
Relative Atomic Mass	135,9473 ± 0,00032 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	2000
parity	+

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

¹³⁷Gd

Massagetal	137
neutron number	73
Relative Atomic Mass	136,94502 ± 0,00032 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	2,2 ± 0,2 s
spin	7/2
nuclear quadrupole moment
ontdekkingsdatum	1999
parity

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

¹³⁸Gd

Massagetal	138
neutron number	74
Relative Atomic Mass	137,940247 ± 0,000215 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	4,7 ± 0,9 s
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1985
parity	+

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

¹³⁹Gd

Massagetal	139
neutron number	75
Relative Atomic Mass	138,93813 ± 0,00021 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	5,7 ± 0,3 s
spin	9/2
nuclear quadrupole moment
ontdekkingsdatum	1983
parity	-

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

¹⁴⁰Gd

Massagetal	140
neutron number	76
Relative Atomic Mass	139,933674 ± 0,00003 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	15,8 ± 0,4 s
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1985
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
e⁺ (positron emission)	67%
ϵ (electron capture)	33%

¹⁴¹Gd

Massagetal	141
neutron number	77
Relative Atomic Mass	140,932126 ± 0,000021213 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	14 ± 4 s
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1986
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	0.03%

¹⁴²Gd

Massagetal	142
neutron number	78
Relative Atomic Mass	141,928116 ± 0,00003 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	70,2 ± 0,6 s
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1986
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
ϵ (electron capture)	52%
e⁺ (positron emission)	48%

¹⁴³Gd

Massagetal	143
neutron number	79
Relative Atomic Mass	142,926750678 ± 0,000215032 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	39 ± 2 s
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1975
parity	+

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

¹⁴⁴Gd

Massagetal	144
neutron number	80
Relative Atomic Mass	143,922963 ± 0,00003 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	4,47 ± 0,06 m
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1968
parity	+

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

¹⁴⁵Gd

Massagetal	145
neutron number	81
Relative Atomic Mass	144,921710051 ± 0,000021165 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	23 ± 0,4 m
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1959
parity	+

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

¹⁴⁶Gd

Massagetal	146
neutron number	82
Relative Atomic Mass	145,918318513 ± 0,000004376 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	48,27 ± 0,09 d
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1957
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹⁴⁷Gd

Massagetal	147
neutron number	83
Relative Atomic Mass	146,919101014 ± 0,000002025 Da
g-factor	0,29142857142857 ± 0,025714285714286
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	38,06 ± 0,12 h
spin	7/2
nuclear quadrupole moment
ontdekkingsdatum	1957
parity	-

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

¹⁴⁸Gd

Massagetal	148
neutron number	84
Relative Atomic Mass	147,918121414 ± 0,000001566 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	71,3 ± 1 y
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1953
parity	+

decay mode	intensity
α (α emission)	100%
2β⁺ (double β⁺ decay)

¹⁴⁹Gd

Massagetal	149
neutron number	85
Relative Atomic Mass	148,919347666 ± 0,000003553 Da
g-factor	0,25142857142857 ± 0,011428571428571
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	9,28 ± 0,1 d
spin	7/2
nuclear quadrupole moment
ontdekkingsdatum	1951
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	4.3%

¹⁵⁰Gd

Massagetal	150
neutron number	86
Relative Atomic Mass	149,918663949 ± 0,0000065 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	1,79 ± 0,08 My
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1953
parity	+

decay mode	intensity
α (α emission)	100%
2β⁺ (double β⁺ decay)

¹⁵¹Gd

Massagetal	151
neutron number	87
Relative Atomic Mass	150,920354922 ± 0,000003212 Da
g-factor	0,22 ± 0,017142857142857
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	123,9 ± 1 d
spin	7/2
nuclear quadrupole moment
ontdekkingsdatum	1950
parity	-

decay mode	intensity
ϵ (electron capture)	100%
α (α emission)	1.1%

¹⁵²Gd

Massagetal	152
neutron number	88
Relative Atomic Mass	151,919798414 ± 0,000001081 Da
g-factor	0
natural abundance	0,2 ± 0,03
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	108 ± 8 Ty
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1938
parity	+

decay mode	intensity
α (α emission)	100%
2β⁺ (double β⁺ decay)

¹⁵³Gd

Massagetal	153
neutron number	89
Relative Atomic Mass	152,921756945 ± 0,000001075 Da
g-factor	0,25333333333333 ± 0,053333333333333
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	240,6 ± 0,7 d
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1947
parity	-

decay mode	intensity
ϵ (electron capture)	100%

¹⁵⁴Gd

Massagetal	154
neutron number	90
Relative Atomic Mass	153,920872974 ± 0,000001066 Da
g-factor	0
natural abundance	2,18 ± 0,02
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1938
parity	+

¹⁵⁵Gd

Massagetal	155
neutron number	91
Relative Atomic Mass	154,922629356 ± 0,000001055 Da
g-factor	-0,17273333333333 ± 0,00026666666666667
natural abundance	14,8 ± 0,09
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	1,27 ± 0,03
ontdekkingsdatum	1933
parity	-

¹⁵⁶Gd

Massagetal	156
neutron number	92
Relative Atomic Mass	155,92213012 ± 0,000001054 Da
g-factor	0
natural abundance	20,47 ± 0,03
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1933
parity	+

¹⁵⁷Gd

Massagetal	157
neutron number	93
Relative Atomic Mass	156,923967424 ± 0,000001048 Da
g-factor	-0,22653333333333 ± 0,0004
natural abundance	15,65 ± 0,04
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	1,35 ± 0,03
ontdekkingsdatum	1933
parity	-

¹⁵⁸Gd

Massagetal	158
neutron number	94
Relative Atomic Mass	157,9241112 ± 0,000001048 Da
g-factor	0
natural abundance	24,84 ± 0,08
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1933
parity	+

¹⁵⁹Gd

Massagetal	159
neutron number	95
Relative Atomic Mass	158,926395822 ± 0,000001051 Da
g-factor	-0,29333333333333 ± 0,02
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	18,479 ± 0,004 h
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1949
parity	-

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

¹⁶⁰Gd

Massagetal	160
neutron number	96
Relative Atomic Mass	159,927061202 ± 0,000001206 Da
g-factor	0
natural abundance	21,86 ± 0,03
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1933
parity	+

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

¹⁶¹Gd

Massagetal	161
neutron number	97
Relative Atomic Mass	160,929676267 ± 0,000001614 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	3,646 ± 0,003 m
spin	5/2
nuclear quadrupole moment
ontdekkingsdatum	1949
parity	-

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

¹⁶²Gd

Massagetal	162
neutron number	98
Relative Atomic Mass	161,930991812 ± 0,000004254 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	8,4 ± 0,2 m
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1967
parity	+

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

¹⁶³Gd

Massagetal	163
neutron number	99
Relative Atomic Mass	162,93409664 ± 0,000000855 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	68 ± 3 s
spin	7/2
nuclear quadrupole moment
ontdekkingsdatum	1982
parity	+

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

¹⁶⁴Gd

Massagetal	164
neutron number	100
Relative Atomic Mass	163,935916193 ± 0,000001073 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	45 ± 3 s
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1988
parity	+

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

¹⁶⁵Gd

Massagetal	165
neutron number	101
Relative Atomic Mass	164,93931708 ± 0,0000014 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	11,6 ± 1 s
spin	1/2
nuclear quadrupole moment	0
ontdekkingsdatum	1998
parity	-

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

¹⁶⁶Gd

Massagetal	166
neutron number	102
Relative Atomic Mass	165,941630413 ± 0,0000017 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	5,1 ± 0,8 s
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	2005
parity	+

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

¹⁶⁷Gd

Massagetal	167
neutron number	103
Relative Atomic Mass	166,945490012 ± 0,000005596 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	4,2 ± 0,3 s
spin	5/2
nuclear quadrupole moment
ontdekkingsdatum	2012
parity	-

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

¹⁶⁸Gd

Massagetal	168
neutron number	104
Relative Atomic Mass	167,948309 ± 0,000322 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	3,03 ± 0,16 s
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	1985
parity	+

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

¹⁶⁹Gd

Massagetal	169
neutron number	105
Relative Atomic Mass	168,952882 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	750 ± 210 ms
spin	7/2
nuclear quadrupole moment
ontdekkingsdatum	2012
parity	-

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

¹⁷⁰Gd

Massagetal	170
neutron number	106
Relative Atomic Mass	169,956146 ± 0,000537 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	420 ± 130 ms
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	2012
parity	+

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

¹⁷¹Gd

Massagetal	171
neutron number	107
Relative Atomic Mass	170,961127 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	9/2
nuclear quadrupole moment
ontdekkingsdatum	2018
parity	+

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

¹⁷²Gd

Massagetal	172
neutron number	108
Relative Atomic Mass	171,964605 ± 0,000322 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	2018
parity	+

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

geskiedenis

Ontdek deur	Jean de Marignac
ligging van ontdekking	Switzerland
ontdekkingsdatum	1880
etimologie	Named after the mineral gadolinite.
uitspraak	GAD-eh-LIN-i-em (Engels)

source

Abundance
Abundance in Earth's crust	6,2 mg/kg
natural abundance (oseaan)	0,0000007 mg/L
natural abundance (human body)
natural abundance (Meteoroïde)	0,000023 %
natural abundance (Son)	0,0000002 %
Abundance in Universe	0,0000002 %

Nuclear Screening Constants

1	s	1.2565
2	p	4.2946
2	s	16.783
3	d	13.723
3	p	19.8508
3	s	20.2903
4	d	34.3664
4	f	38.9864
4	p	31.3532
4	s	30.556
5	p	47.236
5	s	45.118
6	s	55.7854

Gadolinium on ChemicalAid

Gadolinium (Gd)

Physical Property

Chemical Property

other

Isotopes of Gadolinium

133Gd

134Gd

135Gd

136Gd

137Gd

138Gd

139Gd

140Gd

141Gd

142Gd

143Gd

144Gd

145Gd

146Gd

147Gd

148Gd

149Gd

150Gd

151Gd

152Gd

153Gd

154Gd

155Gd

156Gd

157Gd

158Gd

159Gd

160Gd

161Gd

162Gd

163Gd

164Gd

165Gd

166Gd

167Gd

168Gd

169Gd

170Gd

171Gd

172Gd

geskiedenis

source

Nuclear Screening Constants

¹³³Gd

¹³⁴Gd

¹³⁵Gd

¹³⁶Gd

¹³⁷Gd

¹³⁸Gd

¹³⁹Gd

¹⁴⁰Gd

¹⁴¹Gd

¹⁴²Gd

¹⁴³Gd

¹⁴⁴Gd

¹⁴⁵Gd

¹⁴⁶Gd

¹⁴⁷Gd

¹⁴⁸Gd

¹⁴⁹Gd

¹⁵⁰Gd

¹⁵¹Gd

¹⁵²Gd

¹⁵³Gd

¹⁵⁴Gd

¹⁵⁵Gd

¹⁵⁶Gd

¹⁵⁷Gd

¹⁵⁸Gd

¹⁵⁹Gd

¹⁶⁰Gd

¹⁶¹Gd

¹⁶²Gd

¹⁶³Gd

¹⁶⁴Gd

¹⁶⁵Gd

¹⁶⁶Gd

¹⁶⁷Gd

¹⁶⁸Gd

¹⁶⁹Gd

¹⁷⁰Gd

¹⁷¹Gd

¹⁷²Gd