[kearao]

Hi

I have a question for an assignment around predicting the shape and bond angle of NH₂^2-

But I cant even work out where the two additional electrons would go for it to be a -2 ion? Nitrogen has 5 electrons in the valance shell, and with two covalent bonds with hydrogen it makes 7, if it then had two additional electrons where would the second one go?

I know how to answer the bond angle question when referring to a NH₂^- ion but this other electron has thrown me!

Many thanks

[chenbeier]

I think -NH₂^2- is not existing. Only -NH₂^- is existing. Or do you mean Imid NH^2-

[mjc123]

Amide ion is NH₂^-, not NH₂^2-. NH₂^- is isoelectronic with H₂O, just an extra proton and neutron in the O nucleus.

[kearao]

Thank you, it looks like my assignment has mistake in the question in that case, I'll speak to my tutor and crack on!