which one has the minimum bond angle h2o h2s nh3 nf3
Here is a site to read about this. This gives the method to use to answer your question although it contains CH4 which isn't a molecule in your question.
https://www.quora.com/Which-has-smallest-bond-angle-H2S-H2O-NH3-CH4
h2o h2s nh3 nf3
I believe H2O is about 105, H2S is about 92, NH3 is about 107 and NF3 is about 102
To determine which molecule has the minimum bond angle, we need to consider the molecular geometries of each molecule. The bond angle depends on the electronic and molecular geometries.
In H2O (water), the central atom (oxygen) has two lone pairs and two bonded atoms (hydrogens). It has a bent molecular geometry, and the H-O-H bond angle is approximately 104.5 degrees.
In H2S (hydrogen sulfide), the central atom (sulfur) has two lone pairs and two bonded atoms (hydrogens). It also has a bent molecular geometry, and the H-S-H bond angle is approximately 92 degrees.
In NH3 (ammonia), the central atom (nitrogen) has one lone pair and three bonded atoms (hydrogens). It has a trigonal pyramidal molecular geometry, and the H-N-H bond angle is approximately 107 degrees.
In NF3 (nitrogen trifluoride), the central atom (nitrogen) has one lone pair and three bonded atoms (fluorines). It has a trigonal pyramidal molecular geometry, and the F-N-F bond angle is approximately 102 degrees.
Comparing these bond angles, we can see that H2S has the smallest bond angle of approximately 92 degrees. So, the molecule with the minimum bond angle is H2S.
To determine which molecule among H2O, H2S, NH3, and NF3 has the minimum bond angle, we need to consider the shape and the number of electron pairs around the central atom in each molecule.
1. H2O (water): In water, the central atom is oxygen (O) bonded to two hydrogen (H) atoms. The electron pair arrangement around the oxygen atom is tetrahedral, but due to the presence of two lone pairs of electrons, the molecular shape is bent. The bond angle in water is approximately 104.5 degrees.
2. H2S (hydrogen sulfide): Hydrogen sulfide also has the central atom sulfur (S) bonded to two hydrogen (H) atoms. Similar to water, the electron pair arrangement around the sulfur atom is tetrahedral, but due to the presence of two lone pairs, the molecular shape is bent as well. The bond angle in hydrogen sulfide is slightly larger than in water, around 92 degrees.
3. NH3 (ammonia): In ammonia, the central atom is nitrogen (N) bonded to three hydrogen (H) atoms. The electron pair arrangement around the nitrogen atom is also tetrahedral. However, in ammonia, there is only one lone pair of electrons, resulting in a shape called trigonal pyramidal. The bond angle in ammonia is approximately 107 degrees.
4. NF3 (nitrogen trifluoride): Nitrogen trifluoride, like ammonia, has the central atom nitrogen (N) but bonded to three fluoride (F) atoms. The electron pair arrangement around the nitrogen atom is tetrahedral, and there are no lone pairs. Therefore, the molecular shape is trigonal pyramidal, similar to ammonia. The bond angle in nitrogen trifluoride is around 102 degrees.
Comparing the bond angles of these molecules, we find that H2S has the smallest bond angle, approximately 92 degrees.