MCQ
Which will have the maximum value of electron affinity $O^x,\, O^y$ and $O^z \,(x,\, y$ and $z$ are $0,\, -1$ and $-2$ respectively $)$
  • $O^x$
  • B
    $O^y$
  • C
    $O^z$
  • D
    All have equal

Answer

Correct option: A.
$O^x$
a
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 $EA.$

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