angstroms

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angstroms

Postby help » Tue Sep 01, 2009 7:24 am

SOMEONE HELP ME WITH THIS PROBLEM!

The radius of a fluorine atom is 72 x 10-12 m. What is the radius in angstroms?
help
 

Re: angstroms

Postby Dirtman » Wed Sep 02, 2009 3:39 am

help wrote:SOMEONE HELP ME WITH THIS PROBLEM!

The radius of a fluorine atom is 72 x 10-12 m. What is the radius in angstroms?


Be careful with scientific notation. The first number should always be written as a number between 1 and 10, so 72 x 10E-12 m should be written as 7.2 x 10E-11 m, or simply 7.2E-11 m

7.2E-11 m = 72 pm (picometer) = 0.72 angstrom

Note: With a little research, you’ll find the 72 pm atomic radius is not absolute for fluorine.
Dirtman
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