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djyliett [7]
3 years ago
10

Can anyone do these? or even just help .. It is urgent and I've put up all of my points. I've been able to complete everything e

lse but this and I'm stuck.

Chemistry
1 answer:
Lorico [155]3 years ago
7 0
A3B2
bond is ionic 
A is in group 2 (you can pick any like Ca)
B is in group 5 (like B)
the other question:
the reason is they are neutral gas and they already have 8 electrons except for He which is 2 and are completely stable so don't want to loose any electron vs Li and Na which have only 1 electron in the outer layer and are willing to loose that one to become stable. 


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