Number of lone pair (s) of electrons on central atom and the shape of $BrF _{3}$ molecule respectively, are ..... .
$0 ,$ triangular planar
$1,$ pyramidal.
$2,$ bent $T-$shape.
$1,$ bent $T-$shape
Which of the following is paramagnetic
Among the following, the molecule expected to be stabilized by anion formation is
Bond order of ${O_2}$ is
Select incorrect statement
In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?