Question 2A9

Moderators: Chem_Mod, Chem_Admin

lauraxie2e
Posts: 108
Joined: Fri Aug 09, 2019 12:17 am

Question 2A9

Postby lauraxie2e » Wed Oct 30, 2019 10:24 am

When it says which metal is M^2+ and the configuration is [Ar]3d^7 do they leave off 4s^s because of the 2+ charge on the metal?

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

Re: Question 2A9

Postby Chem_Mod » Wed Oct 30, 2019 10:35 am

The two electrons removed to form M^2+ are taken from the 4s rather than the 3d because the 4s is higher in energy (further away from the nucleus) than the 3d.

Kristina Rizo 2K
Posts: 105
Joined: Wed Sep 18, 2019 12:19 am

Re: Question 2A9

Postby Kristina Rizo 2K » Thu Oct 31, 2019 1:43 pm

Yes, they do not notate 4s in the configuration because they took 2 electrons out, to give it a 2+ charge. As stated earlier, they took the electrons out of 4s because it is farther from the nucleus compared to 3d. So it would be harder to take 2 electrons from the d-block compared to the s-block.

melinak1
Posts: 25
Joined: Tue Sep 24, 2019 12:17 am

Re: Question 2A9

Postby melinak1 » Thu Oct 31, 2019 2:09 pm

Kristina Rizo 3K wrote:Yes, they do not notate 4s in the configuration because they took 2 electrons out, to give it a 2+ charge. As stated earlier, they took the electrons out of 4s because it is farther from the nucleus compared to 3d. So it would be harder to take 2 electrons from the d-block compared to the s-block.



this makes sense thank you

Tiffany Chao 2H
Posts: 117
Joined: Fri Aug 09, 2019 12:17 am

Re: Question 2A9

Postby Tiffany Chao 2H » Thu Oct 31, 2019 4:07 pm

The 2+ charge means that 2 electrons are removed. The outermost/highest energy electrons are usually the first to go, thus the removal of the 2 4s electrons.


Return to “Lewis Structures”

Who is online

Users browsing this forum: No registered users and 1 guest