Question

Which statement correctly describes the structures of BH 3 and NH 3? BH3 is trigonal pyramidal and NH3 is trigonal planar. BH3 is trigonal planar and NH3 is trigonal pyramidal. Both are trigonal and planar. Both are pyramidal.

Answer 1

SOLUTION and fonal planes pyramidal. 7 Structure of BH is trigonal plan structure of NH3 is trigonal pyras Borons has 3 electrons in its valence shel so it covalently bonds these electrons with hydrogen electrons where as nitrogen has 5 electrons in its valence shell thus it forms three N-H bonds and has one lone pair in the NH₃ molecule. - I нон 3 the formula to calculate formal charge no of valence electrons in mo of bonding) (no of electrons - non- - - free neutral · bonding Lelectron atom En azide ion, [=n=c] covalent bond Leach with 2en] for middle nitrogen atom, no of valence electron - 5 no of bonding electron = 8 no of non-bonding election o 3. Formal charge - 5 - ₂ [8] -0 = +1

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