The incorrect statement(s) regarding diborane $\left({\mathrm{B}}_2{\mathrm{H}}_6\right)\text{ is/are : }$

Maximum six hydrogen atoms can lie in a plane

Maximum six atoms can lie in a plane.

$\text{ Bridging }{\mathrm{H}}_{\mathrm{b}}-\mathrm{B}-{\mathrm{H}}_{\mathrm{b}}\text{ bond is stronger than terminal }\mathrm{B}-{\mathrm{H}}_{\mathrm{t}}\text{ bond }$

${\text{ Terminal H}}_{\mathrm{t}}-\hat{\mathrm{B}}-{\mathrm{H}}_{\mathrm{t}} \mathrm{bond} \mathrm{angle} \mathrm{is} \mathrm{greater} \mathrm{than} \mathrm{bridging} {\mathrm{H}}_{\mathrm{b}}-\hat{\mathrm{B}}-{\mathrm{H}}_{\mathrm{b}} \mathrm{bondangle}$