CBSE BOARD XII, asked by stephymolsunny4795, 11 months ago

Bond angle in nh3 is 107.5 but in h2o is 104

Answers

Answered by srisaisagarteja

Explanation:

due to the bond pair lonepair repulsions the bond angle changes in NH3,H2O

Answered by rohitsharma2k613

Answer:

Ammonia is based off a tetrahedral shape, the central Nitrogen atom has 4 valence (outer) pairs of electrons, 3 in covalent bonds with Hydrogen atoms and one "lone pair" which are not bonded. The tetrahedral shape has bond angles of 109.5 degrees, but the lone pair exists closer to the nucleus than the bonding pairs and has a greater repulsive effect than the three bonding pairs, therefore pushing them closer together and decreasing the bond angle by 2.5 degrees. When in a transition metal complex the lone pair is co-ordinately (dative covalently) bonded to the central metal atom to form the transition metal complex. This means that all four valence pairs are bonding and have therefore equal repulsive effects, meaning that the bond angles are equal at 109.5 degrees.

Explanation:

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