Question #988ef

This seventh electron pair actually distorts the geometry so that its geometry LOOKS more like two ${\text{NH}}_{3}$ molecules (so-called "${C}_{3 v}$" symmetry) with their $\text{N}$ atoms aligned towards each other, rather than an octahedral shape (so-called "${O}_{h}$" symmetry).
The distortion mostly happens on one plane bisecting the two previously-octahedral faces, apparently, in order for it to have the distorted symmetry previously mentioned (${C}_{3 v}$).