JEE Main 2023ChemistryClassification of Elements and Periodicity in PropertiesEasyMCQ

JEE Main 2023 — Classification of Elements and Periodicity in Properties Question with Solution

JEE Main 2023 (11 Apr Shift 1)

Question

For compound having the formula GaAlCl4, the correct option from the following is

Choose an option

Show full solutionCorrect option: B
Correct answer
BGa is more electronegative than AI and is present as a cationic part of the salt GaAlCl4

Step-by-step explanation

Gallous tetrachloro aluminate (GaAlCl4) exists as Ga+AlCl4-.

Due to the presence of d-orbital in the case of Ga, the shielding effect of the d-orbital electrons is very poor so the size of the Ga atom is smaller than expected and so it can attract the shared pairs of electrons more effectively. Hence, the electronegativity of Ga is more than Al.

 

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About this question

This is a previous-year question from JEE Main 2023, covering the Classification of Elements and Periodicity in Properties chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.