Elements
84

Po

Polonium

Polonium (Po) is a silvery-gray metal that has the atomic number 84 in the periodic table in Group 16. It has the symbol Po.

Polonium was discovered by Marie and Pierre Curie through their work on radiation in pitchblende (uranium oxide.) Polonium is named after Poland, the home of the Curies. Polonium is a harmful metal due to its radioactivity and it is also chemically toxic. It releases alpha particles making it very deadly. It was used in the murder of former Russian spy Alexander Litvinenko. Polonium’s uses are for the emission of alpha particles in paper and steel manufacturing. It is a solid metal at room temperature with a melting point of 254°c and a boiling point of 962°c.

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FAQ's

What is the Melting Point for Polonium?

Polonium has a Melting Point of 254°F, meaning at 254°F it will turn to a liquid.

What is the Boiling Point for Polonium?

Polonium has a Boiling Point of 962°F, meaning at 962°F it will turn to a Gas.

What is the Electronegativity of Polonium?

Polonium's Electronegativty is 2. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Polonium?

Polonium has a Heat of Vaporization of kJ/mol.

Uses

Used in industrial equipment that eliminates static electricity caused by such processes as rolling paper, wire, and sheet metal.

Sources

Occurs in pitchblende from decay of bismuth.

84
Protons
84
Electrons
125
Neutrons

Po

Element Symbol
Po
Atomic Weight
209
Atomic Number
84
State
Solid
Melting Point
Unknown
254
°C
Boiling Point
962
Unknown
°C
Heat of Vaporization
Unknown
kJ/mol
Crystal Structure
Monoclinic
Thermoconductivity
0.2
Unknown
W/cmK
Shells
2,8,18,32,18,6
Group
Post-Transition Metal
Period
6
Block
P Block
Orbitals
[Xe] 4f14 5d10 6s2 6p4
Coefficient of Thermal Expansion
23 10^-6 K^-1
Covalent Radius
1.46 Å
Density at 293K
9.4 g/cm³
Electrical Conductivity
0.0219 10^6/cm ohm
First Ionization Potential
8.4167 V
Second Ionization Potential
--
Third Ionization Potential
--
Ionic Radius
--
Oxydation States
(4),2
Lattice Parameter
3.345 Å
Lattice Parameter 2
--
Lattice Parameter 3
--
Pronounced

peh-LOW-ni-em

Discovered by

Pierre and Marie Curie

Discovery date

1898

Orbital configuration
2,8,18,32,18,6

Download the Periodic Table

Explore Other Post-Transition Metals

207.2
82

Pb

Lead
204.38
81

Tl

Thallium
69.723
31

Ga

Gallium
26.982
13

Al

Aluminium
208.98
83

Bi

Bismuth
114.818
49

In

Indium
118.71
50

Sn

Tin
The post-transition metals are the ones found between the transition metals (to the left) and the metalloids (to the right). They include aluminium (Al), gallium (Ga), indium (In), thallium (Tl), tin (Sn), lead (Pb) and bismuth (Bi).
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Bismuth

83
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Astatine

85