Chemical Elements.com - Polonium (Po)

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Basic Information

Name: Polonium
Symbol: Po
Atomic Number: 84
Atomic Mass: (209.0) amu
Melting Point: 254.0 °C (527.15 K, 489.2 °F)
Boiling Point: 962.0 °C (1235.15 K, 1763.6 °F)
Number of Protons/Electrons: 84
Number of Neutrons: 125
Classification: Metalloid
Crystal Structure: Monoclinic
Density @ 293 K: 9.4 g/cm³
Color: Unknown

Atomic Structure

Number of Energy Levels: 6

First Energy Level:

Second Energy Level:

Third Energy Level:

Fourth Energy Level:

Fifth Energy Level:

Sixth Energy Level:

Isotopes

Isotope	Half Life
Po-206	8.8 days
Po-207	5.8 hours
Po-208	2.89 years
Po-209	102.0 years
Po-210	138.38 days
Po-211	0.51 seconds
Po-212	0.29 microseconds
Po-213	4.0 microseconds
Po-214	163.7 microseconds
Po-215	1.78 milliseconds
Po-216	0.14 seconds
Po-218	3.1 minutes

Facts

Date of Discovery: 1898
Discoverer: Pierre and Marie Curie
Name Origin: After Poland
Uses: No uses known
Obtained From: pitchblende, decay of radium

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