EUROPIUM, Eu (63)

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ATOMIC ARCHITECTURE

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Elemental Tile

Europium

···

OVERVIEW

EUROPIUM

Eu (63)

jʊəˈroʊpiəm

PHONETICS

IDENTIFICATION

Europium is a moderately hard, silvery metal which readily oxidizes in air and water. There is no significant biological role and is relatively non-toxic. Most applications of europium exploit the phosphorescence of europium compounds.

ELEMENT BRIEF

1901 by Eugene Demarcay, France.

DISCOVERY

From the name of Europe.

ETYMOLOGY

Europium

ELEMENT

Eu

SYMBOL

63

ATOMIC NUMBER

7440-53-1

CAS NUMBER

PHYSICAL

ELEMENTAL SPECTRUM

Silver

ELEMENTAL COLOUR

-

REFRACTIVE INDEX

0.150

POISSON RATIO

28.979 cm³

MOLAR VOLUME

-

BRINELL HARDNESS

3.00

MOHS HARDNESS

167.00M Pa, 1.648'2k Atm

VICKERS HARDNESS

-

SPEED OF SOUND

8.30G Pa, 81.914'6k Atm

BULK MODULUS

7.90G Pa, 77.966'9k Atm

SHEAR MODULUS

18.00G Pa, 177.646'2k Atm

YOUNG MODULUS

ALLOTROPES

NONE

THERMODYNAMIC

1,095.15 K, 822.00 °C

MELTING POINT

1,800.15 K, 1,527.00 °C

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

-

CRITICAL TEMPERATURE

-

CRITICAL PRESSURE

14.000'000 W/(m K)

THERMAL CONDUCTIVITY

0.000'035'0 K¯¹

THERMAL EXPANSION

182.00 J/(kg K)

SPECIFIC HEAT

9.200 kJ/mol

HEAT FUSION

175.000 kJ/mol

HEAT VAPORISATION

-

HEAT COMBUSTION

-

CURIE POINT

90.50 K, -182.65 °C

NEEL POINT

-

ADIABATIC INDEX

Solid

PHASE

ELECTROMAGNETIC

Conductor

ELECTRICAL TYPE

1.10M S/m

CONDUCTIVITY

900.00n Ω.m

RESISTIVITY

-

SUPERCONDUCTING POINT

Paramagnetic

MAGNETIC TYPE

0.000'000'276'0

MASS SUSCEPTIBILITY

0.000'000'041'942'00

MOLAR SUSCEPTIBILITY

0.001'447'300'00

VOLUME SUSCEPTIBILITY

STRUCTURE

Lanthanide

CLASSIFICATION

151.964'370'5

ATOMIC WEIGHT

231 pm

ATOMIC RADIUS

168 pm

COVALENT RADIUS SINGLE BOND

134 pm

COVALENT RADIUS DOUBLE BOND

-

COVALENT RADIUS TRIPLE BOND

233 pm

VAN DER WAALS RADIUS

[Xe]6s²4f⁷

ELECTRON CONFIGURATION

Cubic, Body-centred

CRYSTAL STRUCTURE

5.244'00 g/cm³

DENSITY AS SOLID

5.130'00 g/cm³

DENSITY AS LIQUID

-

DENSITY AS GAS

lm_3m

SPACE GROUP NAME

229

SPACE GROUP NUMBER

π/2, π/2 π/2

LATTICE ANGLES

458.1, 458.1 458.1 pm

LATTICE CONSTANTS

REACTIVITY

3

VALENCE

-

ELECTRONEGATIVITY

11.19 kJ/mol

ELECTRON AFFINITY

IONISATION ENERGY

ELEMENTAL DISTRIBUTION

0.000'000'1 %

UNIVERSE

0.000'002'9 %

METEORITES

0.000'000'05 %

SUN

0.000'18 %

EARTH CRUST

0.000'000'000'01 %

OCEANS

-

HUMANS

ISOTOPES

Stable

HALF LIFE

Stable

LIFETIME

4f⁷ = 4, 3, +3, +1/2

QUANTUM NUMBERS

9.200'00 b σ_s

NEUTRON CROSS SECTION

4,530.000'00 b σ_a

NEUTRON MASS ABSORPTION

STABLE ISOTOPES

UNSTABLE ISOTOPES

ISOTOPIC CHAIN

Isotope	Stability	Symbol	Type	Protons		Neutrons		Spin	Parity	Mass		Abundance		Mass Measure	Mass Excess		Binding Energy		Dipole Moment		Quadrupole Moment		Halflife in Years		Halflife in Seconds		A01 Decay Probability		A01 Decay Mode	A01 Decay Energy		A01 Decay Daughter	A01 Decay Link	A02 Decay Mode	A02 Decay Energy		A02 Decay Daughter	A02 Decay Link	Y01 Decay Product Yield		Y01 Decay Product Nuclide	Y02 Decay Product Yield		Y02 Decay Product Nuclide	Y03 Decay Product Yield		Y03 Decay Product Nuclide
Isotope_063_eu_130_u	Unstable	¹³⁰Eu	Fermion	63	p	67	n	2	1	129.963'569'000'0	u	~ 0	%	~ 0	-33.936'000'000'0	MeV	7.953'000'000'0	MeV	-		-		3.486E-11	year	1.100	milli-seconds ( x⁻³ )	99.000'000	%	p	1,028.000	keV	¹²⁹Sm	¹³⁰Eu > [ 99 % , p , 1,028.0 keV ] > ¹²⁹Sm	β+	12,623.000	keV	¹³⁰Sm	¹³⁰Eu > [ , β+ , 12,623.0 keV ] > ¹³⁰Sm	?	%	¹²⁹Xe	?	%	¹²⁸Xe	?	%	¹³⁰Xe
Isotope_063_eu_131_u	Unstable	¹³¹Eu	Boson	63	p	68	n	3/2	1	130.957'753'000'0	u	~ 0	%	~ 0	-39.353'000'000'0	MeV	7.995'000'000'0	MeV	-		-		5.640E-10	year	17.800	milli-seconds ( x⁻³ )	88.000'000	%	p	932.200	keV	¹³⁰Sm	¹³¹Eu > [ 88 % , p , 932.2 keV ] > ¹³⁰Sm	β+	9,824.000	keV	¹³¹Sm	¹³¹Eu > [ , β+ , 9,824.0 keV ] > ¹³¹Sm	12.000'000	%	¹³¹Xe	?	%	¹²⁹Xe	?	%	¹³⁰Xe
Isotope_063_eu_132_u	Unstable	¹³²Eu	Fermion	63	p	69	n	?	0	131.954'370'000'0	u	~ 0	%	~ 0	-42.504'000'000'0	MeV	8.020'000'000'0	MeV	-		-		3.169E-9	year	100.000	milli-seconds ( x⁻³ )	100.000'000	%	β+	11,721.000	keV	¹³²Sm	¹³²Eu > [ 100 % , β+ , 11,721.0 keV ] > ¹³²Sm	p	405.000	keV	¹³¹Sm	¹³²Eu > [ , p , 405.0 keV ] > ¹³¹Sm	0.000'050	%	¹³¹Xe	?	%	¹³²Xe	?	%	¹³⁰Xe
Isotope_063_eu_133_u	Unstable	¹³³Eu	Boson	63	p	70	n	11/2	-1	132.949'240'000'0	u	~ 0	%	~ 0	-47.283'000'000'0	MeV	8.056'000'000'0	MeV	-		-		6.338E-9	year	200.000	milli-seconds ( x⁻³ )	?	%	β+	8,824.000	keV	¹³³Sm	¹³³Eu > [ ? % , β+ , 8,824.0 keV ] > ¹³³Sm						?	%	¹³³Cs	?	%	¹³²Xe
Isotope_063_eu_134_u	Unstable	¹³⁴Eu	Fermion	63	p	71	n	?	0	133.946'510'000'0	u	~ 0	%	~ 0	-49.826'000'000'0	MeV	8.075'000'000'0	MeV	-		-		1.584E-8	year	500.000	milli-seconds ( x⁻³ )	100.000'000	%	β+	10,659.000	keV	¹³⁴Sm	¹³⁴Eu > [ 100 % , β+ , 10,659.0 keV ] > ¹³⁴Sm	β+p	?	keV	¹³³Pm	¹³⁴Eu > [ , β+p , ? keV ] > ¹³³Pm	100.000'000	%	¹³⁴Ba	?	%	¹³³Cs
Isotope_063_eu_135_u	Unstable	¹³⁵Eu	Boson	63	p	72	n	11/2	-1	134.941'820'000'0	u	~ 0	%	~ 0	-54.194'000'000'0	MeV	8.108'000'000'0	MeV	-		-		4.753E-8	year	1.500	seconds ( x⁰ )	100.000'000	%	β+	7,641.000	keV	¹³⁵Sm	¹³⁵Eu > [ 100 % , β+ , 7,641.0 keV ] > ¹³⁵Sm	β+p	?	keV	¹³⁴Pm	¹³⁵Eu > [ , β+p , ? keV ] > ¹³⁴Pm	100.000'000	%	¹³⁵Ba	0.020'000	%	¹³⁴Ba
Isotope_063_eu_136_u	Unstable	¹³⁶Eu	Fermion	63	p	73	n	7	1	135.939'600'000'0	u	~ 0	%	~ 0	-56.262'000'000'0	MeV	8.123'000'000'0	MeV	-		-		1.046E-7	year	3.300	seconds ( x⁰ )	100.000'000	%	β+	9,527.000	keV	¹³⁶Sm	¹³⁶Eu > [ 100 % , β+ , 9,527.0 keV ] > ¹³⁶Sm	β+p	?	keV	¹³⁵Pm	¹³⁶Eu > [ , β+p , ? keV ] > ¹³⁵Pm	0.090'000	%	¹³⁵Ba	?	%	¹³⁶Ba
Isotope_063_eu_137_u	Unstable	¹³⁷Eu	Boson	63	p	74	n	11/2	-1	136.935'570'000'0	u	~ 0	%	~ 0	-60.016'000'000'0	MeV	8.150'000'000'0	MeV	-		-		2.662E-7	year	8.400	seconds ( x⁰ )	100.000'000	%	β+	9,687.000	keV	¹³⁷Sm	¹³⁷Eu > [ 100 % , β+ , 9,687.0 keV ] > ¹³⁷Sm						?	%	¹³⁷Ba
Isotope_063_eu_138_u	Unstable	¹³⁸Eu	Fermion	63	p	75	n	6	-1	137.933'709'000'0	u	~ 0	%	~ 0	-61.749'669'000'0	MeV	8.161'620'000'0	MeV	5.200'000'000'0	nm	-		3.834E-7	year	12.100	seconds ( x⁰ )	100.000'000	%	β+	8,725.900	keV	¹³⁸Sm	¹³⁸Eu > [ 100 % , β+ , 8,725.9 keV ] > ¹³⁸Sm						?	%	¹³⁸Ba
Isotope_063_eu_139_u	Unstable	¹³⁹Eu	Boson	63	p	76	n	11/2	-1	138.929'792'280'0	u	~ 0	%	~ 0	-65.398'070'000'0	MeV	8.187'218'000'0	MeV	-		-		5.672E-7	year	17.900	seconds ( x⁰ )	100.000'000	%	β+	5,960.000	keV	¹³⁹Sm	¹³⁹Eu > [ 100 % , β+ , 5,960.0 keV ] > ¹³⁹Sm						100.000'000	%	¹³⁹La
Isotope_063_eu_140_u	Unstable	¹⁴⁰Eu	Fermion	63	p	77	n	1	1	139.928'087'607'0	u	~ 0	%	~ 0	-66.985'963'000'0	MeV	8.197'732'000'0	MeV	1.365'000'000'0	nm	0.310'000'000'0	b	4.785E-8	year	1.510	seconds ( x⁰ )	100.000'000	%	β+	7,447.800	keV	¹⁴⁰Sm	¹⁴⁰Eu > [ 100 % , β+ , 7,447.8 keV ] > ¹⁴⁰Sm						100.000'000	%	¹⁴⁰Ce
Isotope_063_eu_141_u	Unstable	¹⁴¹Eu	Boson	63	p	78	n	5/2	1	140.924'930'720'0	u	~ 0	%	~ 0	-69.926'584'000'0	MeV	8.217'691'000'0	MeV	3.494'000'000'0	nm	0.850'000'000'0	b	1.290E-6	year	40.700	seconds ( x⁰ )	100.000'000	%	β+	4,989.900	keV	¹⁴¹Sm	¹⁴¹Eu > [ 100 % , β+ , 4,989.9 keV ] > ¹⁴¹Sm						100.000'000	%	¹⁴¹Pr
Isotope_063_eu_142_u	Unstable	¹⁴²Eu	Fermion	63	p	79	n	1	1	141.923'434'945'0	u	~ 0	%	~ 0	-71.319'889'000'0	MeV	8.226'472'000'0	MeV	1.536'000'000'0	nm	0.120'000'000'0	b	7.478E-8	year	2.360	seconds ( x⁰ )	100.000'000	%	β+	6,650.800	keV	¹⁴²Sm	¹⁴²Eu > [ 100 % , β+ , 6,650.8 keV ] > ¹⁴²Sm						100.000'000	%	¹⁴²Nd
Isotope_063_eu_143_u	Unstable	¹⁴³Eu	Boson	63	p	80	n	5/2	1	142.920'297'509'0	u	~ 0	%	~ 0	-74.242'392'000'0	MeV	8.245'824'000'0	MeV	3.673'000'000'0	nm	0.510'000'000'0	b	4.911E-6	year	154.980	seconds ( x⁰ )	100.000'000	%	β+	4,258.600	keV	¹⁴³Sm	¹⁴³Eu > [ 100 % , β+ , 4,258.6 keV ] > ¹⁴³Sm						100.000'006	%	¹⁴³Nd
Isotope_063_eu_144_u	Unstable	¹⁴⁴Eu	Fermion	63	p	81	n	1	1	143.918'816'823'0	u	~ 0	%	~ 0	-75.621'643'000'0	MeV	8.254'191'000'0	MeV	1.893'000'000'0	nm	0.100'000'000'0	b	3.232E-7	year	10.200	seconds ( x⁰ )	100.000'000	%	β+	5,328.100	keV	¹⁴⁴Sm	¹⁴⁴Eu > [ 100 % , β+ , 5,328.1 keV ] > ¹⁴⁴Sm						?	%	¹⁴⁰Ce
Isotope_063_eu_145_u	Unstable	¹⁴⁵Eu	Boson	63	p	82	n	5/2	1	144.916'265'237'0	u	~ 0	%	~ 0	-77.998'429'000'0	MeV	8.269'321'000'0	MeV	3.993'3.993'3.993'3.993	nm	0.290'000'000'0	b	1.622E-2	year	512.006	kilo-seconds ( x³ )	100.000'000	%	β+	1,637.110	keV	¹⁴⁵Sm	¹⁴⁵Eu > [ 100 % , β+ , 1,637.11 keV ] > ¹⁴⁵Sm						100.000'000	%	¹⁴⁵Nd	0.000'000	%	¹⁴¹Pr
Isotope_063_eu_146_u	Unstable	¹⁴⁶Eu	Fermion	63	p	83	n	4	-1	145.917'205'817'0	u	~ 0	%	~ 0	-77.122'285'000'0	MeV	8.261'964'000'0	MeV	1.425'000'000'0	nm	-0.180'000'000'0	b	1.261E-2	year	397.958	kilo-seconds ( x³ )	100.000'000	%	β+	2,857.400	keV	¹⁴⁶Sm	¹⁴⁶Eu > [ 100 % , β+ , 2,857.4 keV ] > ¹⁴⁶Sm						100.000'000	%	¹⁴⁵Nd
Isotope_063_eu_147_u	Unstable	¹⁴⁷Eu	Boson	63	p	84	n	5/2	1	146.916'746'111'0	u	~ 0	%	~ 0	-77.550'499'000'0	MeV	8.263'580'000'0	MeV	3.724'000'000'0	nm	0.550'000'000'0	b	6.590E-2	year	2.080	mega-seconds ( x⁶ )	100.000'000	%	β+	699.380	keV	¹⁴⁷Sm	¹⁴⁷Eu > [ 100 % , β+ , 699.38 keV ] > ¹⁴⁷Sm	α	2,990.320	keV	¹⁴³Pm	¹⁴⁷Eu > [ , α , 2,990.32 keV ] > ¹⁴³Pm	100.002'200	%	¹⁴³Nd
Isotope_063_eu_148_u	Unstable	¹⁴⁸Eu	Fermion	63	p	85	n	5	-1	147.918'085'895'0	u	~ 0	%	~ 0	-76.302'498'000'0	MeV	8.253'849'000'0	MeV	2.340'000'000'0	nm	0.350'000'000'0	b	1.492E-1	year	4.710	mega-seconds ( x⁶ )	100.000'000	%	β+	2,017.500	keV	¹⁴⁸Sm	¹⁴⁸Eu > [ 100 % , β+ , 2,017.5 keV ] > ¹⁴⁸Sm	α	2,693.700	keV	¹⁴⁴Pm	¹⁴⁸Eu > [ , α , 2,693.7 keV ] > ¹⁴⁴Pm	100.000'001	%	¹⁴⁰Ce
Isotope_063_eu_149_u	Unstable	¹⁴⁹Eu	Boson	63	p	86	n	5/2	1	148.917'931'238'0	u	~ 0	%	~ 0	-76.446'560'000'0	MeV	8.253'590'000'0	MeV	3.565'000'000'0	nm	0.750'000'000'0	b	2.548E-1	year	8.040	mega-seconds ( x⁶ )	100.000'000	%	ϵ	695.360	keV	¹⁴⁹Sm	¹⁴⁹Eu > [ 100 % , ϵ , 695.36 keV ] > ¹⁴⁹Sm						?	%	¹⁴⁵Nd
Isotope_063_eu_150_u	Unstable	¹⁵⁰Eu	Fermion	63	p	87	n	5	-1	149.919'701'819'0	u	~ 0	%	~ 0	-74.797'274'000'0	MeV	8.241'380'000'0	MeV	2.708'000'000'0	nm	1.130'000'000'0	b	3.678E+1	years	1.161	giga-seconds ( x⁹ )	100.000'000	%	β+	1,237.870	keV	¹⁵⁰Sm	¹⁵⁰Eu > [ 100 % , β+ , 1,237.87 keV ] > ¹⁵⁰Sm						100.000'000	%	¹⁵⁰Sm
Isotope_063_eu_151_s	Stable	¹⁵¹Eu	Boson	63	p	88	n	5/2	1	150.919'850'161'0	u	47.810'000	%	72.154'780'362'0	-74.659'094'000'0	MeV	8.239'339'000'0	MeV	3.471'700'000'0	nm	0.903'000'000'0	b	-
Isotope_063_eu_152_u	Unstable	¹⁵²Eu	Fermion	63	p	89	n	3	-1	151.921'744'534'0	u	~ 0	%	~ 0	-72.894'497'000'0	MeV	8.226'624'000'0	MeV	-1.941'400'000'0	nm	2.710'000'000'0	b	1.355E+1	years	427.482	mega-seconds ( x⁶ )	72.100'000	%	β+	852.068	keV	¹⁵²Sm	¹⁵²Eu > [ 72.1 % , β+ , 852.068 keV ] > ¹⁵²Sm	β-	1,819.710	keV	¹⁵²Gd	¹⁵²Eu > [ , β- , 1,819.71 keV ] > ¹⁵²Gd
Isotope_063_eu_153_s	Stable	¹⁵³Eu	Boson	63	p	90	n	5/2	1	152.921'230'339'0	u	52.190'000	%	79.809'590'113'9	-73.373'467'000'0	MeV	8.228'740'000'0	MeV	1.533'000'000'0	nm	2.412'000'000'0	b	-
Isotope_063_eu_154_u	Unstable	¹⁵⁴Eu	Fermion	63	p	91	n	3	-1	153.922'979'237'0	u	~ 0	%	~ 0	-71.744'378'000'0	MeV	-71.744'378'000'0	MeV	-2.005'000'000'0	nm	2.840'000'000'0	b	8.600E+0	years	271.386	mega-seconds ( x⁶ )	100.000'000	%	β-	1,698.840	keV	¹⁵⁴Gd	¹⁵⁴Eu > [ 100 % , β- , 1,698.84 keV ] > ¹⁵⁴Gd	ϵ	717.220	keV	¹⁵⁴Sm	¹⁵⁴Eu > [ , ϵ , 717.22 keV ] > ¹⁵⁴Sm	100.000'000	%	¹⁵⁴Gd
Isotope_063_eu_155_u	Unstable	¹⁵⁵Eu	Boson	63	p	92	n	5/2	1	154.922'893'260'0	u	~ 0	%	~ 0	-71.824'466'000'0	MeV	8.216'715'000'0	MeV	1.560'000'000'0	nm	2.340'000'000'0	b	4.764E+0	years	150.353	mega-seconds ( x⁶ )	100.000'000	%	β-	252.660	keV	¹⁵⁵Gd	¹⁵⁵Eu > [ 100 % , β- , 252.66 keV ] > ¹⁵⁵Gd						100.000'000	%	¹⁵⁵Gd
Isotope_063_eu_156_u	Unstable	¹⁵⁶Eu	Fermion	63	p	93	n	0	1	155.924'752'249'0	u	~ 0	%	~ 0	-70.092'829'000'0	MeV	8.204'682'000'0	MeV	-		-		4.157E-2	year	1.312	mega-seconds ( x⁶ )	100.000'000	%	β-	2,449.370	keV	¹⁵⁶Gd	¹⁵⁶Eu > [ 100 % , β- , 2,449.37 keV ] > ¹⁵⁶Gd						100.000'000	%	¹⁵⁶Gd
Isotope_063_eu_157_u	Unstable	¹⁵⁷Eu	Boson	63	p	94	n	5/2	1	156.925'423'647'0	u	~ 0	%	~ 0	-69.467'426'000'0	MeV	8.199'850'000'0	MeV	1.500'000'000'0	nm	2.600'000'000'0	b	1.732E-3	year	54.650	kilo-seconds ( x³ )	100.000'000	%	β-	1,363.250	keV	¹⁵⁷Gd	¹⁵⁷Eu > [ 100 % , β- , 1,363.25 keV ] > ¹⁵⁷Gd						100.000'000	%	¹⁵⁷Gd
Isotope_063_eu_158_u	Unstable	¹⁵⁸Eu	Fermion	63	p	95	n	1	-1	157.927'845'302'0	u	~ 0	%	~ 0	-67.211'669'000'0	MeV	8.184'759'000'0	MeV	1.440'000'000'0	nm	0.660'000'000'0	b	8.714E-5	year	2.750	kilo-seconds ( x³ )	100.000'000	%	β-	3,485.100	keV	¹⁵⁸Gd	¹⁵⁸Eu > [ 100 % , β- , 3,485.1 keV ] > ¹⁵⁸Gd						100.000'000	%	¹⁵⁸Gd
Isotope_063_eu_159_u	Unstable	¹⁵⁹Eu	Boson	63	p	96	n	5/2	1	158.929'088'861'0	u	~ 0	%	~ 0	-66.053'301'000'0	MeV	8.176'760'000'0	MeV	1.380'000'000'0	nm	-		3.454E-5	year	1.090	kilo-seconds ( x³ )	100.000'000	%	β-	2,515.000	keV	¹⁵⁹Gd	¹⁵⁹Eu > [ 100 % , β- , 2,515.0 keV ] > ¹⁵⁹Gd						100.000'000	%	¹⁵⁹Tb
Isotope_063_eu_160_u	Unstable	¹⁶⁰Eu	Fermion	63	p	97	n	1	-1	159.931'971'000'0	u	~ 0	%	~ 0	-63.369'000'000'0	MeV	8.159'000'000'0	MeV	-		-		1.204E-5	year	379.800	seconds ( x⁰ )	100.000'000	%	β-	4,580.000	keV	¹⁶⁰Gd	¹⁶⁰Eu > [ 100 % , β- , 4,580.0 keV ] > ¹⁶⁰Gd						?	%	¹⁶⁰Dy
Isotope_063_eu_161_u	Unstable	¹⁶¹Eu	Boson	63	p	98	n	5/2	1	160.933'680'000'0	u	~ 0	%	~ 0	-61.777'000'000'0	MeV	8.149'000'000'0	MeV	-		-		8.239E-7	year	26.000	seconds ( x⁰ )	100.000'000	%	β-	3,736.000	keV	¹⁶¹Gd	¹⁶¹Eu > [ 100 % , β- , 3,736.0 keV ] > ¹⁶¹Gd						100.000'000	%	¹⁶¹Dy
Isotope_063_eu_162_u	Unstable	¹⁶²Eu	Fermion	63	p	99	n	?	0	161.937'040'000'0	u	~ 0	%	~ 0	-58.647'000'000'0	MeV	8.129'000'000'0	MeV	-		-		3.359E-7	year	10.600	seconds ( x⁰ )	100.000'000	%	β-	5,640.000	keV	¹⁶²Gd	¹⁶²Eu > [ 100 % , β- , 5,640.0 keV ] > ¹⁶²Gd						100.000'000	%	¹⁶²Dy
Isotope_063_eu_163_u	Unstable	¹⁶³Eu	Boson	63	p	100	n	5/2	1	162.939'210'000'0	u	~ 0	%	~ 0	-56.626'000'000'0	MeV	8.116'000'000'0	MeV	-		-		1.901E-6	year	60.000	seconds ( x⁰ )	?	%	β-	4,862.000	keV	¹⁶³Gd	¹⁶³Eu > [ ? % , β- , 4,862.0 keV ] > ¹⁶³Gd						?	%	¹⁶³Dy
Isotope_063_eu_164_u	Unstable	¹⁶⁴Eu	Fermion	63	p	101	n	?	0	163.942'990'000'0	u	~ 0	%	~ 0	-53.104'000'000'0	MeV	8.095'000'000'0	MeV	-		-		6.338E-8	year	2.000	seconds ( x⁰ )	?	%	β-	6,642.000	keV	¹⁶⁴Gd	¹⁶⁴Eu > [ ? % , β- , 6,642.0 keV ] > ¹⁶⁴Gd						?	%	¹⁶⁴Dy
Isotope_063_eu_165_u	Unstable	¹⁶⁵Eu	Boson	63	p	102	n	5/2	1	164.945'720'000'0	u	~ 0	%	~ 0	-50.561'000'000'0	MeV	8.079'000'000'0	MeV	-		-		3.169E-8	year	1,000.000	milliseconds ( x⁻³ )	?	%	β-	5,906.000	keV	¹⁶⁵Gd	¹⁶⁵Eu > [ ? % , β- , 5,906.0 keV ] > ¹⁶⁵Gd						?	%	¹⁶⁵Ho
Isotope_063_eu_166_u	Unstable	¹⁶⁶Eu	Fermion	63	p	103	n	?	0	165.949'970'000'0	u	~ 0	%	~ 0	-46.603'000'000'0	MeV	8.055'000'000'0	MeV	-		-		1.268E-8	year	400.000	milli-seconds ( x⁻³ )	?	%	β-	7,797.000	keV	¹⁶⁶Gd	¹⁶⁶Eu > [ ? % , β- , 7,797.0 keV ] > ¹⁶⁶Gd						?	%	¹⁶⁶Er
Isotope_063_eu_167_u	Unstable	¹⁶⁷Eu	Boson	63	p	104	n	5/2	1	166.953'210'000'0	u	~ 0	%	~ 0	-43.585'000'000'0	MeV	8.037'000'000'0	MeV	-		-		6.338E-9	year	200.000	milli-seconds ( x⁻³ )	?	%	β-	7,117.000	keV	¹⁶⁷Gd	¹⁶⁷Eu > [ ? % , β- , 7,117.0 keV ] > ¹⁶⁷Gd						?	%	¹⁶⁷Er

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