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Which electron configuration could represent a strontium atom in an excited state?

Which electron configuration could represent a strontium atom in an excited state?

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A. 2–8–18–7–1
B. 2–8–18–7–3
C. 2–8–18–8–1
D. 2–8–18–8–2

This question is part of CHEM HW 3.1
Asked by Ionca, Last updated: Jan 23, 2020

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3 Answers

W. Mocroft

Love to do some charity work. Have a passion for writing and do it in my spare time

W. Mocroft, Philanthropist, Master Degree in International Business, Las Vegas

Answered Dec 26, 2018

Correct answer is option B
From the periodic table, we know that Strontium has 38 electrons. Therefore, any option that does not add up to 38 should be eliminated. This makes option A and C...Read More
 

l.Steven

L.Steven

Answered Jan 07, 2018

Each element has an electron configuration that corresponds to its proton number. These electro...Read More
 

John Smith

John Smith

Answered Oct 13, 2016

2–8–18–7–3

The normal electron configuration is 2-8-18-8-2, and the excited state occurs when one of the 8 bumps up to the valence shell.
 

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