InterviewSolution
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InterviewSolution
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The `I.E_(1)` among the group 13 member follows asA. `B gt Al lt Ga lt Tl`B. `B gt Al gt Ga gt Tl`C. `B gt Ga gt Al gt Tl`D. `B gt Ga lt Al lt Tl` |
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Answer» Correct Answer - C Unlike expected order of first ionization energy i.e., `B gt Al gt Ga`, the actual order of `IE_(1)` is `B gt Ga gt Al`. This is because of the small atomic size and greater effective nuclear charge, the valence electrons of Ga are held more tightly than Al. Hence `IE_(1)` of Ga is more than that of Al. |
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