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Chem Question


Guest Nick1983

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Guest Nick1983

The electronic configuration of a particular neutral atom is 1s2 2s2 2p6 3s2 3p2. The number of upaired electrons in this atom is?

 

The CDA test answer says 3... I thought it was 2. Can somebody explain this?

 

Also, the practice test that they gave was pretty easy, am I going to get screwed over by the real thing???

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I think you're right, the answer is 2 unpaired electrons.

 

Explanation: the CDA answer is wrong.

 

I also think you will find the real deal more challenging than the practice test in the CDA booklet. I did.

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