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Question
The element with lowest ionization energy among the following is:
The element with lowest ionization energy among the following is:
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Solution
The correct option is B Rb
The ionization energies of alkali metals decrease progressively as we move down the group due to addition of new shells. Since Rb is at bottom position among the given elements hence, it has the lowest ionization energy among the given elements.
Rb
The ionization energies of alkali metals decrease progressively as we move down the group due to addition of new shells. Since Rb is at bottom position among the given elements hence, it has the lowest ionization energy among the given elements.
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