R/H Chem Worksheet
Name:_________________________________
Electron Configurations
October’s End
1.) 7N15
2.) 12Mg24
3.) 10Ne20
4.) 13Al27 3+
5.) 9F19 -1
6.) 8O17 -2
Period:_______
7.) 20Ca40 +2
8.) 26Fe30
9.) 27Co59
10.) 35Br80
11.) Phosphorus – neutral atom
13.) Selenium – neutral atom
12.) Phosphorus – most likely ion
14.) Selenium – most likely ion
HONORS EXTENSION
Fermium – neutral atom (this is element Z# = 100) – Complete the orbital chart below then write the
shorthand configuration below it.
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