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Bad White [126]
3 years ago
11

The ion that has the same e- arrangement as Ar:

Chemistry
2 answers:
alina1380 [7]3 years ago
7 0
Well, I recommend reading the text :P
Alisiya [41]3 years ago
5 0
the answer is E- all of these

to check if these ions have the same e- configuration, check them in the periodic table and see where they land when you take or add electrons. 

for example, K is one space away to be like Ar, which is just one space behind. having a positive charge +1, means that it has one less electron. if you remove this electron, it is like Ar because is one space.

another example-> S-2  means you have add two electrons because charge is negative, so you add. two spaces after S land in Ar. so it is same e- configuration as Ar.
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