1.

Which of the following chemical changes can occur with the greatest ease?

Answer»

`N to N^(-)`
`N^(-) to N^(2-)`
`N^(2-)to N^(2-)`
`O to O^(-)`

Solution :Though adding an electron to N–2 will also MAKE it attain noble GAS configuration but adding a THIRD electron to the same atom WITHOUT adding any protons is very difficult as the incoming third electron will be HIGHLY repelled by the already present electrons. Converting O towill be easy.


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