Which electron configuration represents the electrons in an atom of chlorine in an excited state?
(1) 2-7-7 (3) 2-8-7
(2) 2-7-8 (4) 2-8-8

Question

03-06-2015
Chemistry

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Which electron configuration represents the electrons in an atom of chlorine in an excited state?
(1) 2-7-7 (3) 2-8-7
(2) 2-7-8 (4) 2-8-8

Sagot :

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jamuuj jamuuj · Answer 1 · 2018-08-11T06:17:11-04:00

Answer;

(4) 2-8-8

Explanation;

An electron configuration shows the arrangement of electrons around the nucleus of an atom. At the ground state (the most stable state for electrons) the electron configuration of chlorine is 2-8-7. Chlorine is a halogen that contains 17 electrons, to attain a stable configuration chlorine requires to gain 1 electron.

-At the excited state chlorine will therefore have an electron configuration of 2-8-8.

Sagot :

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