In which of the following process highest energy is absorbed?
In which of the following process highest energy is absorbed?
$\mathrm{Cu} ightarrow \mathrm{Cu}^{+}$
$\mathrm{Br} ightarrow \mathrm{Br}^{-}$
$\mathrm{I} ightarrow \mathrm{I}^{-}$
$\mathrm{Li} ightarrow \mathrm{Li}^{+}$
Solution
To determine which process absorbs the highest energy, let's analyze each one:
1. \(\mathrm{Cu} ightarrow \mathrm{Cu}^{+}\): This is the ionization of copper. It requires a significant amount of energy to remove an electron from a neutral atom.
2. \(\mathrm{Br} ightarrow \mathrm{Br}^{-}\): This is the addition of an electron to bromine. This process usually releases energy, not absorbs it.
3. \(\mathrm{I} ightarrow \mathrm{I}^{-}\): This is the addition of an electron to iodine. Like bromine, this process generally releases energy.
4. \(\mathrm{Li} ightarrow \mathrm{Li}^{+}\): This is the ionization of lithium. While it requires energy, it is typically less than the ionization energy of transition metals like copper.
Conclusion:
The highest energy absorption occurs in the ionization process of a transition metal. Thus:
The process absorbing the highest energy is:
\(\mathrm{Cu} ightarrow \mathrm{Cu}^{+}\)
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