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| Subject:
periodic table
Category: Science > Physics Asked by: daisy001-ga List Price: $2.00 |
Posted:
28 Mar 2005 10:59 PST
Expires: 27 Apr 2005 11:59 PDT Question ID: 501466 |
Why are the atomic masses listed in the periodic table not whole numbers? |
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| Subject:
Re: periodic table
From: chadsly-ga on 28 Mar 2005 12:17 PST |
It's an average. Check out: http://www.carlton.paschools.pa.sk.ca/chemical/molemass/ |
| Subject:
Re: periodic table
From: daveosei-ga on 28 Mar 2005 17:45 PST |
this is because it is an average calculated weight of the atom. |
| Subject:
Re: periodic table
From: barbarossa7-ga on 31 Mar 2005 10:33 PST |
in the number that appers on the periodic table all the isotopes are taken into consideration and taken the average by percent |
| Subject:
Re: periodic table
From: 1267-ga on 05 Apr 2005 03:42 PDT |
There are isotopes of the elements.These isotopes have same atomic number but different mass numbers. The average of these mass numbers are calculated. |
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