Po

Polonium · element 84

Post-Transition Metal · Solid at room temperature

Polonium is a chemical element with symbol Po and atomic number 84, discovered in 1898 by Marie Curie and Pierre Curie. A rare and highly radioactive element with no stable isotopes, polonium is chemically similar to bismuth and tellurium, and it occurs in uranium ores. Applications of polonium are few.

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This is only an illustration, not polonium itself. A silvery, radioactive metal, producing so much heat that it gets liquid and ionizes the surrounding air
This is only an illustration, not polonium itself. A silvery, radioactive metal, producing so much heat that it gets liquid and ionizes the surrounding air - Chemical ELements A Virtual Museum, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0> source: https://images-of-elements.com/polonium.php

Key facts

Atomic mass
209 u
how heavy one atom is
Phase (room temp.)
Solid
Density
9.196 g/cm³
how tightly packed it is
Melting point
527 K (254 °C)
when solid turns to liquid
Boiling point
1235 K (962 °C)
when liquid turns to gas
Period
6
its row in the periodic table
Group
16
its column in the periodic table
Block
P-block
the neighbourhood it lives in
Electronegativity
2
how strongly it pulls electrons
Electron configuration
[Xe] 4f14 5d10 6s2 6p4
where its electrons live
Shells
2 · 8 · 18 · 32 · 18 · 6
electrons in each layer, inside to out
Discovered by
Pierre Curie
who found it
Appearance
silvery
what it looks like

Source: Wikipedia

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