Among the following, the correct statement(s) is(are)

Options

AAl{\left(C{H}_{3}\right)}_{3} has the three-centre two-electron bonds in its dimeric structure
B $AlC{l}_{3}$ has the three-centre two-electron bonds in its dimeric structure
C $B{H}_{3}$ has the three-centre two-electron bonds in its dimeric structure
DThe Lewis acidity of $BC{l}_{3}$ is greater than that of $AlC{l}_{3}$

Correct answer

A. Al{\left(C{H}_{3}\right)}_{3} has the three-centre two-electron bonds in its dimeric structure

Step-by-step solution

(i) Among the following, the correct statement(s) is(are)

(ii) Among the following, the correct statement(s) is(are)

(iii) Among the following, the correct statement(s) is(are)

(iv) Lewis acidic strength decreases down the group. The decrease in acid strength occurs because as size increases, the attraction between the incoming electron pair and the nucleus weakens.

Hence Lewis acidic strength of $BC{l}_{3}$ is more than $AlC{l}_{3} .$

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