Homework 2.45d

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Lauryn Shinno 2H
Posts: 59
Joined: Fri Sep 28, 2018 12:24 am

Homework 2.45d

Postby Lauryn Shinno 2H » Sat Oct 27, 2018 4:14 pm

It asks which element is predicted to have the following ground-state electron configuration: [Rn]7s^2 6d^2. First, why is the 7s before 6d? Also, the answer is Thorium, which I thought was in the f-block? How does that work?

005115864
Posts: 64
Joined: Fri Sep 28, 2018 12:15 am

Re: Homework 2.45d

Postby 005115864 » Sun Oct 28, 2018 2:42 pm

Hi, this has to do with the fact that ground-state electron configurations means numbers of electrons = number of protons. Add all the electrons in the ground-state electron configuration and find the same number on the periodic table and you will get the element predicted to have that configuration.


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