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JEE Main 202311 AprilMorning Shift
Exam
JEE Main
Year
2023
Date
11 April
Shift
Morning Shift
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

JEE Main 2023 · 11 April · Morning Shift · Chemistry · Classification of Elements and Periodicity in Properties

For compound having the formula GaAlCl _ 4 , the correct option...

For compound having the formula GaAlCl4{GaAlCl}_{4}, the correct option from the following is

Options

  1. AGa is coordinated with CI in GaAlCl4{GaAlCl}_{4}
  2. BGa is more electronegative than AI and is present as a cationic part of the salt GaAlCl4{GaAlCl}_{4}
  3. CCI forms bond with both AI and Ga in GaAlCl4{GaAlCl}_{4}
  4. DOxidation state of Ga in the salt GaAlCl4is+3{GaAlCl}_{4}\text{is} + 3

Correct answer

B. Ga is more electronegative than AI and is present as a cationic part of the salt GaAlCl4{GaAlCl}_{4}

Step-by-step solution

Gallous tetrachloro aluminate (GaAlCl4{GaAlCl}_{4}) exists as Ga+AlCl4−{Ga}^{+}{AlCl}_{4}^{-}.

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

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