Predict the bond angles and shape of a molecule of ammonia.

  1. There are four (4) groups of electrons around the central nitrogen atom (3 shared pairs and one lone pair of electrons)2) According to electron repulsion theory, the electrons move further away from each other, increasing the distance between them as much as possible.3) Shared pair: Lone pair exerts a greater repulsion and minimises the bond angle further.4) Bond angle- 107 degrees5) Shape- Trigonal Pyramidal This answer is predicted according to valence shells electron repulsion theory (VSEPR).
NB

Related Chemistry A Level answers

All answers ▸

What is the difference in kinetics between a 0th, 1st and 2nd order reaction?


Molecules of hydrogen chloride, HCl, and molecules of fluorine, F2, contain the same number of electrons. Hydrogen chloride boils at –85 °C and fluorine boils at –188 °C. Explain why there is a difference in the boiling points of HCl and F2.


What is the structure of benzene?


A sample of nitrogen gas is heated to 100°C, at a pressure of 10kPa and volume of 0.2m^3. How many moles of gas are present?