Question

When placed in the order of increasing ionization energy, what is the correct order for $O,O^{+1},O^{-1}$?

• A. $O>O^{+1}>O^{-1}$
• B. $O^{-1}>O^{+1}>O$
• C. $O^{+1}>O>O^{-1}$
• D. $O^{-1}>O>O^{+1}$

Answer 1

The correct option is C $O^{+1}>O>O^{-1}$

It is easy to remove an electron from a neutral atom than a positive ion and is even more easy to remove it from negative ion. Hence the correct order of IE is $O^{+}>O>O^{-}$, as lower IE implies more ease to remove electron.