Electron configuration

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Electron configuration

Postby sarahtang4B » Sun Oct 28, 2018 1:24 pm

What is the ground state e- configuration for Ru 3+?

Why is the configuration for Ru3+ [Kr] 4d5 and not [Kr]4d3 5s2.

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Joined: Fri Sep 28, 2018 12:26 am

Re: Electron configuration

Postby mbaker4E » Sun Oct 28, 2018 2:16 pm

Electrons are always removed from the outermost shell because those are the electrons with the highest energy and are therefore the most unstable. 5s has more energy than 4d and therefore when Ru is ionized electrons are taken from the 5s orbital first.

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