In which of the following compounds the π - electron cloud contains the same number of electrons (1) naphthalene (2) anthracene (3) biphenylene (4) phenanthrene

Question

In which of the following compounds the π - electron cloud contains the same number of electrons (1) naphthalene (2) anthracene (3) biphenylene (4) phenanthrene (A) 1, 2 and 3 are correct (B) 1 and 2 are correct (C) 2 and 4 are correct (D) 1 and 3 are correct

Tardigrade Admin · Accepted Answer

In anthracene and phenanthrene seven double bonds are present hence they have same number of electrons, i.e., 7× 2=14 text π electrons.

Q. In which of the following compounds the $π -$ electron cloud contains the same number of electrons (1) naphthalene (2) anthracene (3) biphenylene (4) phenanthrene

1, 2 and 3 are correct

1 and 2 are correct

2 and 4 are correct

1 and 3 are correct

In anthracene and phenanthrene seven double bonds are present hence they have same number of electrons, i.e.,
$7 \times 2 = 14 π$ electrons.

Q. In which of the following compounds the π− electron cloud contains the same number of electrons (1) naphthalene (2) anthracene (3) biphenylene (4) phenanthrene