Polonium Element (Periodic Table)

Polonium

Polonium (Po) is a chemical element of the periodic table, located in the group 16 and the period 6, and has the atomic number 84. It is a rare, silvery-grey or black post transition metal, which is named after Poland, homeland of Marie Curie. It is highly toxic and is counted as one of the radioactive elements. It is a member of the chalcogen group.

group
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
period
1
1
H
2
He
2
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
3
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
4
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6
55
Cs
56
Ba
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
7
87
Fr
88
Ra
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
– p block

FAQs on Polonium Element

Polonium
‣ What does polonium look like?

Appearance: silvery
‣ Who discovered the element polonium? When was polonium discovered?

Discovery: Pierre and Marie Curie (1898)
First isolation: Willy Marckwald (1902)
‣ Where is polonium on the periodic table?

Polonium Periodic Table

Location: Polonium is found in the sixth row of the periodic table below the tellurium element.
‣ What is the atomic number of polonium?

Atomic number (Z): 84
‣ What is the symbol of polonium?

Symbol: Po
Polonium atomic weight: [209]
‣ What block is polonium in the periodic table?

Block: p-block
‣ What group is polonium on the periodic table?

Group: 16 (chalcogens)
‣ What period is polonium on the periodic table?

Period: 6
‣ What is the atomic radius of polonium?

Atomic radius: empirical: 168 pm
‣ What is the covalent radius of polonium?

Covalent radius: 140±4 pm
Polonium Van der Waals radius: 197 pm
‣ What is polonium’s melting point?

Melting point: 527 K (254 °C, 489 °F)
‣ What is the boiling point of polonium?

Boiling point: 1235 K (962 °C, 1764 °F)
‣ How many electron shells does polonium have?

Electrons per shell: 2, 8, 18, 32, 18, 6
‣ What is the electron configuration of polonium?

Electron configuration: [Xe] 4f14 5d10 6s2 6p4
‣ How many allotropes does polonium have?

Allotropes: α, β
‣ What is the ionization energy of polonium?

Ionization energies:
1st: 812.1 kJ/mol
‣ What is the phase of polonium?

Phase (at r.t): solid
‣ What is the density of polonium?

Density (near r.t):
alpha: 9.196 g/cm3
beta: 9.398 g/cm3
Polonium magnetic ordering: nonmagnetic
Polonium natural occurrence: from decay
Polonium oxidation state: -2, +2, +3, +4, +6
‣ What’s the electronegativity of polonium?

Electronegativity: Pauling scale: 2.0
Polonium heat of fusion: ca. 13 kJ/mol
Polonium heat of vaporization: 102.91 kJ/mol
Polonium molar heat capacity: 26.4 J/(mol K)
‣ What is the crystal structure of polonium?

Crystal structure: cubic
α-Po
Crystal structure: rhombohedral
β-Po
Thermal expansion of polonium: 23.5 µm/(m.K) (at 25 °C)
Thermal conductivity of polonium: 20 W/(m.K)
Polonium electrical resistivity: α: 0.40 µΩ.m (at 0 °C)
Polonium CAS number: 7440-08-6

‣ Polonium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)(864)10031236

‣ How many isotopes does polonium have?

Main isotopes of polonium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
208Posyn2.898 yα
β+
204Pb
208Bi
209Posyn125.2 yα
β+
205Pb
209Bi
210Potrace138.376 dα206Pb

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