ବିଦ୍ୟୁତ ଋଣାତ୍ମକ ଦୃଷ୍ଟିରୁ କେଉଁଟି ସଠିକ୍ କ୍ରମ?

1
F> O> N> C
2
O> F> N> C
3
F> N> C> O 
4
F > C > O > N

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