Polonium

Statistics:

• Name: Polonium
• Symbol: Po
• Classification: Metalloid
• Atomic Number: 84
• Atomic Mass: 208.9824 g/mol
• Density: 9.2 g/cm³
• Melting: 254°C
• Boiling: 962°C
• Protons & Electrons:84
• Neutrons:125
• Discovered: 1898
• Discovered By: Marie and Pierre Curie
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 32
• Level 5: 18
• Level 6: 6

Isotopes:

Isotope: Half-life

• ²⁰⁶Po: 8.8 days
• ²⁰⁷Po: 5.80 hours
• ²⁰⁸Po: 2.898 years
• ²⁰⁹Po: 102 years
• ²¹⁰Po: 138.376 days
• ²¹¹Po: 0.516 seconds
• ²¹²Po: 0.299 microseconds
• ²¹³Po: 4.2 microseconds
• ²¹⁴Po: 164.3 microseconds
• ²¹⁵Po: 1.781 milliseconds
• ²¹⁶Po: 0.145 seconds
• ²¹⁸Po: 3.10 minutes

Brief Summary

Polonium is a Metalloid with the symbol 'Po' and contains 84 Protons & Electrons with 125 neutrons in the nucleus of the atom. Polonium has an atomic mass of 208.9824 g/mol and, at a temperature of 20°C, has a density of 9.2 g/cm³. It will melt at a temperature of 254°C and boil at 962°C.

Polonium was discovered by Marie and Pierre Curie in 1898 and is named 'Polonium' After Poland.

Some common usages for Polonium: currently unknown.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Polonium :: Po :: 84 - Chemical Element. 22 Nov. 2008 <http://www.chemicalelement.com/element/polonium.html>.