Asked by melissa

what is the electron configuration of a calcium atom whose atomic number is 20

16 years ago

Answered by DrBob222

1s2 2s2 2p6 3s2 3p6 4s2.
Check it out to make sure this is correct.

16 years ago

Answered by DrBob222

1s2 2s2 2p6 3s2 3p6 4s2.
Check it out to make sure this is correct.
Forgot to post the web site where you can check it. http://www.webelements.com/calcium/atoms.html

16 years ago

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