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July 28, 2014

Homework Help: AP Chemistry

Posted by Ferdinand on Sunday, October 30, 2011 at 3:11pm.

Which of the following electron configurations correspond to an excited state? Identify the atoms and write the ground-state electron configuration where appropriate. If the configuration is a noble gas, enter the noble gas in brackets, for example [Ne] for F -. If the configuration given corresponds to a ground state electron configuration, say: "ground state"

(a) 1s2 2s2 3p1
element?

electron configuration?

(b) 1s2 2s2 2p6
element?

electron configuration?

(c) 1s2 2s2 2p4 3s1
element?

electron configuration?

(d) [Ar]4s2 3d5 4p1
element?

electron configuration?


How many unpaired electrons are present in each of these species?

(a) 1s2 2s2 3p1?

ground-state?

(b) 1s2 2s2 2p6?

ground-state?

(c) 1s2 2s2 2p4 3s1?

ground-state?

(d) [Ar]4s2 3d5 4p1?

ground-state?

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