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The p-Block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe p-Block Elements2 Marks
Question
Gallium has higher I.E. than Al. Explain.
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Answer

It is due to poor shielding effect of d-electrons in Ga, effective nuclear charge increases as compared to Al, therefore, I.E. of Ga is higher than Al. Secondly, Ga is smaller than Al.

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