What is geometry of Ammonia?

Are thought the answer to the second question was 3 not 2 because does ammonia have a 107 degree angle?

4 for molecular geometry; 5 for electronic geometry.

To determine the geometry of ammonia (NH3), we need to consider its electron and molecular geometry.

Step 1: Determine the electron geometry:
- Ammonia has 4 regions of electron density around its central atom (3 bonding pairs and 1 lone pair).
- The electron geometry is determined by the arrangement of these regions, which in this case is called "tetrahedral".

Step 2: Determine the molecular geometry:
- The molecular geometry only considers the arrangement of the bonded atoms, ignoring the lone pairs.
- Since ammonia has one lone pair, the molecular geometry will be different from the electron geometry.
- The lone pair exerts more repulsion than the bonding pairs, causing the bonded atoms to be pushed closer together.
- Therefore, the molecular geometry of ammonia is "trigonal pyramidal".

So, the correct answers are:
- Geometry of Ammonia: 4) trigonal pyramidal
- Bond angle of Ammonia: 3) less than 109.5 degrees