Question

Which will have the maximum value of electron affinity $O^x,O^y$ and $O^z$:

[$x$, $y$ and $z$ respectively are $0,-1$ and $-2$]

• A. $O^x$
• B. $O^y$
• C. $O^z$
• D. All have equal

Answer 1

The correct option is A $O^x$

The EA defines ease with which an atom or ion accepts the incoming electron. Higher EA implies greater ease. A negative ion will always repel an electron. Hence among $O,O^{-},O^{2-}$, $O$ will accept electron with most ease i.e., $O$ has highest EA.