UFRGS 2018

Considerando a geometria molecular de algumas moléculas e íons, assinale a alternativa que lista apenas as espécies com geometria trigonal plana.

  • A

    $\mathrm{CO}_{2}, \mathrm{SO}_{2}, \mathrm{SO}_{3}$

  • B

    $\mathrm{O}_{3}, \mathrm{NH}_{3}, \mathrm{NO}_{3}^{-}$

  • C

    $\mathrm{NO}_{3}^{-}, \mathrm{O}_{3}, \mathrm{CO}_{2}$

  • D

    $\mathrm{NH}_{3}, \mathrm{BF}_{3}, \mathrm{SO}_{3}$

  • E

    $\mathrm{SO}_{3}, \mathrm{NO}_{3}^{-}, \mathrm{BF}_{3}$

Resolução

$\mathrm{SO}_{3}, \mathrm{NO}_{3}^{-}, \mathrm{BF}_{3}$