Q47 / 150 · MHT CET 2011 · Chemistry

Which of the following transitions involves maximum amount of energy?

  • A
    $M_{(g)}^{-} \longrightarrow M_{(g)}$
  • B
    $M_{(g)} \longrightarrow M_{(g)}^{+}$
  • C
    $M_{(g)}^{+} \longrightarrow M_{(g)}^{2+}$
  • Correct answer
    D
    $M^{2+}(g) \longrightarrow M_{(g)}^{3+}$

Solution

$M^{2+} \longrightarrow M^{3+}$, after the removal of $2 e^{-}$, the nuclear charge per electron increases due to which high energy is required to remove $3 e^{-}$.

Hence, the correct answer is option: 'D'.

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