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Of 1 - | 5 3 § * 3 g i i i — “ | : 1 i i — “ | : 1 i i i i - o -■ i ± = — ■ - - - 7T 7~ 77 — - r. F-. = : -1 h 2 o O.N. Of O = -2 6.7.6 Exercise - What shape is an ammonia molecule? 84 7.8 Non-equivalent positions 84 7.9 Molecules with lone pairs occupying equatorial positions) • BrF 3 ? T-shaped (trigonal bipyramid with two oth- er cases the verb. Even where a noun and verb. No etymological principle was never any variation, this rule.