ASTATINE

BASICS

• 1. Atomic number: 85
• 2. Symbol: At
• 3. Average mass: 210
• 4. Electronegativity: 2.2
• 5. Group: 17 ; Period: 6

BASICS (ctnd.)

1. Melting Point: 575K
2. Boiling Point: 610K
3. Density: Unknown
4. Radioactive

Discovery:
1. Dale R. Corson, K.R MacKenzie, & Emilio Segre
2. Bismuth with alpha particles.
3. "Astatos"

Other Information:

1. Thermal Conductivity: 0.017 w/cmK
2. Usually only found in nuclear reactions
3. Not very many uses

COOL FACT!

Astatine is the rarest element on Earth and only 1 gram is found in nature!

SOURCES 1

• http://www.webelements.com/astatine/
• http://www.rsc.org/periodic-table/element/85/astatine
• http://pubs.acs.org/cen/80th/print/astatineprint.html
• http://www.3rd1000.com/elements/Astatine.htm
• http://www.lenntech.com/periodic/elements/at.htm

SOURCES 2

• http://www.gordonengland.co.uk/elements/metaloids.htm
• http://www.chemicool.com/elements/astatine.html
• http://www.lookchem.com/Periodic-Table/Astatine/
• http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/at.html
• http://www.chemicalelements.com/elements/at.html

SOURCES 3
1. http://education.jlab.org/itselemental/ele085.html
2. http://www.softschools.com/facts/periodic_table/astatine_facts/359/