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Whelan Whelan
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Posts: 3158
9 years ago
Which element has the ground-state electron configuration [Xe]6s2  4?
A) Re
B) Ir
C) Eu
D) Gd
Textbook 
Introductory Chemistry Essentials

Introductory Chemistry Essentials


Edition: 5th
Author:
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hbutler2hbutler2
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9 years ago
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Whelan Author
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9 years ago
Thanks
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Yesterday
You make an excellent tutor!
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2 hours ago
Good timing, thanks!
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