Polonium (Po)

chemical element with symbol Po and atomic number 84

Atomic Number	84
Atomic Weight	209
mass number	186

Group	16
Period	6
Block	p

proton	84 p⁺
neutron	102 n⁰
electron	84 e^-

Physical Property

Atomic Radius	190 pm 250 pm
molar volume	22,7 cm³/mol
Covalent Radius	145 pm 135 pm 129 pm 140 pm
Metallic Radius
ionic radius	94 pm 108 pm 67 pm
Crystal Radius	108 pm 122 pm 81 pm
Van der Waals radius	197 pm 259 pm 197 pm 470,9 pm
density	9,2 g/cm³

Chemical Property

{ERROR}

energy

proton affinity
electron affinity	1,9 eV/particle
ionization energy	8,414 eV/particle 19,3 eV/particle 27 eV/particle 36 eV/particle 57 eV/particle 69,1 eV/particle 108 eV/particle 125 eV/particle 146,1 eV/particle 166 eV/particle 190 eV/particle 209 eV/particle 235 eV/particle 257 eV/particle 281 eV/particle 304 eV/particle 416 eV/particle 444 eV/particle 473 eV/particle 502 eV/particle 560 eV/particle 590 eV/particle 670 eV/particle 700 eV/particle 740 eV/particle 800 eV/particle 860 eV/particle 930 eV/particle 990 eV/particle 1 060 eV/particle 1 120 eV/particle 1 180 eV/particle 1 250 eV/particle 1 320 eV/particle 1 380 eV/particle 1 440 eV/particle 1 510 eV/particle 1 570 eV/particle 1 865 eV/particle 1 923 eV/particle 1 986 eV/particle 2 052 eV/particle 2 115 eV/particle 2 177 eV/particle 2 281 eV/particle 2 345 eV/particle 2 414 eV/particle 2 480 eV/particle 2 740 eV/particle 2 803 eV/particle 2 873 eV/particle 2 938 eV/particle 3 194 eV/particle 3 268 eV/particle 3 450 eV/particle 3 524,2 eV/particle 5 785 eV/particle 5 930 eV/particle 6 084 eV/particle 6 248 eV/particle 6 405 eV/particle 6 557 eV/particle 6 856 eV/particle 7 015 eV/particle 7 191 eV/particle 7 350 eV/particle 7 810 eV/particle 7 940 eV/particle 8 100 eV/particle 8 240 eV/particle 9 050 eV/particle 9 220 eV/particle 9 550 eV/particle 9 710 eV/particle 20 670 eV/particle 21 050 eV/particle 21 470 eV/particle 21 860 eV/particle 24 860 eV/particle 25 360 eV/particle 25 990 eV/particle 26 390,4 eV/particle 105 064,3 eV/particle 106 982,7 eV/particle

enthalpy of vaporization	102,9 kJ/mol
enthalpy of fusion	10 kJ/mol
standard enthalpy of formation
electron

electron shell	2, 8, 18, 32, 18, 6

valence electron	6 ⓘ

electron configuration	[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p⁴

oxidation number	-2, 2, 4, 5, 6
electronegativity	13 eV/particle 0.186842 2
Electrophilicity Index	2,0413454866441514 eV/particle
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point	1 235,15 K
Melting Point	527,15 K
critical pressure
critical temperature
triple point
appearance
color	Black #ff1493 #ab5c00 #ab5c00
appearance	silvery
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type	Conductor
electrical conductivity	2,3 MS/m
electrical resistivity	0,00000043 Ω*m
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal Structure	{ERROR}
lattice constant	3,35 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
Category	Actinides, Metalloids
CAS Group	VIB
IUPAC Group	VIA
Glawe Number	93
Mendeleev Number	103
Pettifor Number	91
Geochemical Class	U/Th decay series
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	44 ± 4 a₀
C6 Dispersion Coefficient	424 a₀
allotrope	Alpha Polonium, Beta Polonium
Neutron cross section	0,5
Neutron Mass Absorption
quantum number	3P2
space group	221 (Pm-3m)

Isotopes of Polonium

Stable Isotopes	0
Unstable Isotopes	42
Natural Isotopes	0

¹⁸⁶Po

mass number	186
neutron number	102
Relative Atomic Mass	186,004403174 ± 0,000019622 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	34 ± 12 us
spin	0
nuclear quadrupole moment	0
time of discovery or invention	2005
parity	+

decay mode	intensity
α (α emission)	100%
p (proton emission)

¹⁸⁷Po

mass number	187
neutron number	103
Relative Atomic Mass	187,003031482 ± 0,00003503 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,4 ± 0,25 ms
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	2005
parity	-

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

¹⁸⁸Po

mass number	188
neutron number	104
Relative Atomic Mass	187,999415586 ± 0,000021438 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	270 ± 30 us
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1999
parity	+

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

¹⁸⁹Po

mass number	189
neutron number	105
Relative Atomic Mass	188,998473425 ± 0,000023681 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	3,5 ± 0,5 ms
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1999
parity	-

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

¹⁹⁰Po

mass number	190
neutron number	106
Relative Atomic Mass	189,995101731 ± 0,000014131 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	2,45 ± 0,05 ms
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1996
parity	+

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

¹⁹¹Po

mass number	191
neutron number	107
Relative Atomic Mass	190,994558494 ± 0,000007624 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	22 ± 1 ms
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1993
parity	-

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

¹⁹²Po

mass number	192
neutron number	108
Relative Atomic Mass	191,991340274 ± 0,000011416 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	32,2 ± 0,3 ms
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1977
parity	+

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

¹⁹³Po

mass number	193
neutron number	109
Relative Atomic Mass	192,991062421 ± 0,000015599 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	399 ± 34 ms
spin	3/2
nuclear quadrupole moment	−1,3 ± 0,3
time of discovery or invention	1967
parity	-

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

¹⁹⁴Po

mass number	194
neutron number	110
Relative Atomic Mass	193,988186058 ± 0,00001386 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	392 ± 4 ms
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1967
parity	+

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

¹⁹⁵Po

mass number	195
neutron number	111
Relative Atomic Mass	194,988065781 ± 0,000006486 Da
g-factor	−0,4 ± 0,026666666666667
natural abundance
radioactivity	☢️ radioactive element
half-life	4,64 ± 0,09 s
spin	3/2
nuclear quadrupole moment	−0,9 ± 0,3
time of discovery or invention	1967
parity	-

decay mode	intensity
α (α emission)	94%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

¹⁹⁶Po

mass number	196
neutron number	112
Relative Atomic Mass	195,985540722 ± 0,000005778 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	5,63 ± 0,07 s
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1967
parity	+

decay mode	intensity
α (α emission)	94%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

¹⁹⁷Po

mass number	197
neutron number	113
Relative Atomic Mass	196,985621939 ± 0,000010585 Da
g-factor	−0,58666666666667 ± 0,046666666666667
natural abundance
radioactivity	☢️ radioactive element
half-life	53,6 ± 0,9 s
spin	3/2
nuclear quadrupole moment	−0,4 ± 0,2
time of discovery or invention	1965
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
α (α emission)	44%

¹⁹⁸Po

mass number	198
neutron number	114
Relative Atomic Mass	197,983388753 ± 0,000018705 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	1,76 ± 0,024 m
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1965
parity	+

decay mode	intensity
α (α emission)	57%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	43%

¹⁹⁹Po

mass number	199
neutron number	115
Relative Atomic Mass	198,983640445 ± 0,000005828 Da
g-factor	−0,60666666666667 ± 0,046666666666667
natural abundance
radioactivity	☢️ radioactive element
half-life	5,47 ± 0,15 m
spin	3/2
nuclear quadrupole moment	−0,27 ± 0,15
time of discovery or invention	1965
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	92.5%
α (α emission)	7.5%

²⁰⁰Po

mass number	200
neutron number	116
Relative Atomic Mass	199,981812355 ± 0,000008136 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	11,51 ± 0,08 m
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1951
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	88.9%
α (α emission)	11.1%

²⁰¹Po

mass number	201
neutron number	117
Relative Atomic Mass	200,982263799 ± 0,000005305 Da
g-factor	−0,65333333333333 ± 0,046666666666667
natural abundance
radioactivity	☢️ radioactive element
half-life	15,6 ± 0,1 m
spin	3/2
nuclear quadrupole moment	0,1 ± 0,1
time of discovery or invention	1951
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	98.87%
α (α emission)	1.13%

²⁰²Po

mass number	202
neutron number	118
Relative Atomic Mass	201,980738934 ± 0,000009307 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	44,6 ± 0,4 m
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1951
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	98.08%
α (α emission)	1.92%

²⁰³Po

mass number	203
neutron number	119
Relative Atomic Mass	202,981416072 ± 0,000004981 Da
g-factor	0,296 ± 0,02
natural abundance
radioactivity	☢️ radioactive element
half-life	36,7 ± 0,5 m
spin	5/2
nuclear quadrupole moment	0,17 ± 0,1
time of discovery or invention	1951
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	99.89%
α (α emission)	0.11%

²⁰⁴Po

mass number	204
neutron number	120
Relative Atomic Mass	203,980310078 ± 0,000010811 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	3,519 ± 0,012 h
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1951
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	99.33%
α (α emission)	0.67%

²⁰⁵Po

mass number	205
neutron number	121
Relative Atomic Mass	204,981190006 ± 0,000010798 Da
g-factor	0,304 ± 0,024
natural abundance
radioactivity	☢️ radioactive element
half-life	1,74 ± 0,08 h
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1951
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	99.96%
α (α emission)	0.04%

²⁰⁶Po

mass number	206
neutron number	122
Relative Atomic Mass	205,980473662 ± 0,000004306 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	8,8 ± 0,1 d
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1947
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	94.55%
α (α emission)	5.45%

²⁰⁷Po

mass number	207
neutron number	123
Relative Atomic Mass	206,981593334 ± 0,000007148 Da
g-factor	0,316 ± 0,024
natural abundance
radioactivity	☢️ radioactive element
half-life	5,8 ± 0,02 h
spin	5/2
nuclear quadrupole moment	0,28 ± 0,03
time of discovery or invention	1947
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	0.021%

²⁰⁸Po

mass number	208
neutron number	124
Relative Atomic Mass	207,981246035 ± 0,000001795 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	2,898 ± 0,002 y
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1947
parity	+

decay mode	intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	0.0042%

²⁰⁹Po

mass number	209
neutron number	125
Relative Atomic Mass	208,982430361 ± 0,000001909 Da
g-factor	1,36 ± 0,16
natural abundance
radioactivity	☢️ radioactive element
half-life	124 ± 3 y
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	1949
parity	-

decay mode	intensity
α (α emission)	99.546%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	0.454%

²¹⁰Po

mass number	210
neutron number	126
Relative Atomic Mass	209,982873686 ± 0,00000123 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	138,376 ± 0,002 d
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1898
parity	+

decay mode	intensity
α (α emission)	100%

²¹¹Po

mass number	211
neutron number	127
Relative Atomic Mass	210,986653171 ± 0,000001347 Da
g-factor	−0,26666666666667 ± 0,017777777777778
natural abundance
radioactivity	☢️ radioactive element
half-life	516 ± 3 ms
spin	9/2
nuclear quadrupole moment	−0,77 ± 0,15
time of discovery or invention	1913
parity	+

decay mode	intensity
α (α emission)	100%

²¹²Po

mass number	212
neutron number	128
Relative Atomic Mass	211,988867982 ± 0,000001237 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	294,4 ± 0,8 ns
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1906
parity	+

decay mode	intensity
α (α emission)	100%

²¹³Po

mass number	213
neutron number	129
Relative Atomic Mass	212,992857154 ± 0,000003277 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	3,705 ± 0,001 us
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1947
parity	+

decay mode	intensity
α (α emission)	100%

²¹⁴Po

mass number	214
neutron number	130
Relative Atomic Mass	213,995201287 ± 0,000001556 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	163,47 ± 0,03 us
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1912
parity	+

decay mode	intensity
α (α emission)	100%

²¹⁵Po

mass number	215
neutron number	131
Relative Atomic Mass	214,999418385 ± 0,000002276 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,781 ± 0,005 ms
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1911
parity	+

decay mode	intensity
α (α emission)	100%
β⁻ (β⁻ decay)	2.3%

²¹⁶Po

mass number	216
neutron number	132
Relative Atomic Mass	216,001913416 ± 0,000001948 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	144 ± 0,6 ms
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1910
parity	+

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

²¹⁷Po

mass number	217
neutron number	133
Relative Atomic Mass	217,006316145 ± 0,000007025 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,53 ± 0,05 s
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1956
parity	+

decay mode	intensity
α (α emission)	97.5%
β⁻ (β⁻ decay)	2.5%

²¹⁸Po

mass number	218
neutron number	134
Relative Atomic Mass	218,008971234 ± 0,000002112 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	3,097 ± 0,012 m
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1904
parity	+

decay mode	intensity
α (α emission)	99.98%
β⁻ (β⁻ decay)	0.02%

²¹⁹Po

mass number	219
neutron number	135
Relative Atomic Mass	219,013614 ± 0,000017 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	10,3 ± 1 m
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1998
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	71.8%
α (α emission)	28.2%

²²⁰Po

mass number	220
neutron number	136
Relative Atomic Mass	220,016386 ± 0,000019 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1998
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

²²¹Po

mass number	221
neutron number	137
Relative Atomic Mass	221,021228 ± 0,000021 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	2,2 ± 0,7 m
spin	9/2
nuclear quadrupole moment
time of discovery or invention	2010
parity	+

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

²²²Po

mass number	222
neutron number	138
Relative Atomic Mass	222,02414 ± 0,000043 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	9,1 ± 7,2 m
spin	0
nuclear quadrupole moment	0
time of discovery or invention	2010
parity	+

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

²²³Po

mass number	223
neutron number	139
Relative Atomic Mass	223,02907 ± 0,00021 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	11/2
nuclear quadrupole moment
time of discovery or invention	2010
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

²²⁴Po

mass number	224
neutron number	140
Relative Atomic Mass	224,03211 ± 0,00021 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
time of discovery or invention	2010
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

²²⁵Po

mass number	225
neutron number	141
Relative Atomic Mass	225,037123 ± 0,000322 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	3/2
nuclear quadrupole moment
time of discovery or invention	2010
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

²²⁶Po

mass number	226
neutron number	142
Relative Atomic Mass	226,04031 ± 0,00043 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
time of discovery or invention	2010
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

²²⁷Po

mass number	227
neutron number	143
Relative Atomic Mass	227,04539 ± 0,00043 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	5/2
nuclear quadrupole moment
time of discovery or invention	2010
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

history

discoverer or inventor	Pierre and Marie Curie
location of discovery	France
time of discovery or invention	1898
etymology	Named for Poland, native country of Marie Curie.
pronunciation	peh-LOW-ni-em (engelsk)

source

Abundance
Abundance in Earth's crust	0,0000000002 mg/kg
natural abundance (ocean)	0,000000000000015 mg/L
natural abundance (human body)	0 %
natural abundance (meteoroid)
natural abundance (Sun)
Abundance in Universe	0 %

Nuclear Screening Constants

1	s	1.6232
2	p	4.5428
2	s	22.0782
3	d	13.428
3	p	23.2851
3	s	24.3813
4	d	36.3328
4	f	37.8416
4	p	36.3328
4	s	35.4784
5	d	58.696
5	p	53.9755
5	s	51.977
6	p	69.7794
6	s	67.6692

Polonium on ChemicalAid

Polonium (Po)

Physical Property

Chemical Property

other

Isotopes of Polonium

186Po

187Po

188Po

189Po

190Po

191Po

192Po

193Po

194Po

195Po

196Po

197Po

198Po

199Po

200Po

201Po

202Po

203Po

204Po

205Po

206Po

207Po

208Po

209Po

210Po

211Po

212Po

213Po

214Po

215Po

216Po

217Po

218Po

219Po

220Po

221Po

222Po

223Po

224Po

225Po

226Po

227Po

history

source

Nuclear Screening Constants

¹⁸⁶Po

¹⁸⁷Po

¹⁸⁸Po

¹⁸⁹Po

¹⁹⁰Po

¹⁹¹Po

¹⁹²Po

¹⁹³Po

¹⁹⁴Po

¹⁹⁵Po

¹⁹⁶Po

¹⁹⁷Po

¹⁹⁸Po

¹⁹⁹Po

²⁰⁰Po

²⁰¹Po

²⁰²Po

²⁰³Po

²⁰⁴Po

²⁰⁵Po

²⁰⁶Po

²⁰⁷Po

²⁰⁸Po

²⁰⁹Po

²¹⁰Po

²¹¹Po

²¹²Po

²¹³Po

²¹⁴Po

²¹⁵Po

²¹⁶Po

²¹⁷Po

²¹⁸Po

²¹⁹Po

²²⁰Po

²²¹Po

²²²Po

²²³Po

²²⁴Po

²²⁵Po

²²⁶Po

²²⁷Po