Homework 2A15

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DTingey_1C
Posts: 55
Joined: Fri Aug 30, 2019 12:16 am

Homework 2A15

Postby DTingey_1C » Mon Oct 28, 2019 7:52 pm

Why does is Ga, in problem D, form ions with a +3 charge? Why not -5 so it becomes stable?

Jamie Lee 1F
Posts: 106
Joined: Fri Aug 09, 2019 12:16 am

Re: Homework 2A15

Postby Jamie Lee 1F » Mon Oct 28, 2019 8:12 pm

I think question 2A15 is asking what is the likely charge formed by the given elements, rather than what elements it would form ions with based on its charge. The answer is +3 because Ga is "willing" to give away 3 electrons. Hopefully I'm understanding your question correctly!

MAC 4G
Posts: 121
Joined: Wed Sep 18, 2019 12:16 am

Re: Homework 2A15

Postby MAC 4G » Mon Oct 28, 2019 11:09 pm

The explanation above is right. The question is asking for the charge of the ion when it gives or receives e- to become stable. In this case, it would be easier for Ga to lose and give away its 3 valence e- rather than looking to gain 5.

Amy Xiao 1I
Posts: 101
Joined: Sat Jul 20, 2019 12:15 am

Re: Homework 2A15

Postby Amy Xiao 1I » Tue Oct 29, 2019 8:10 pm

For Gallium to give away 3 electrons requires lower energy compared to accepting 5 electrons.


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