Atomic number is number on periodic table, mass is how big element is
If they were not repeatable people would think the experiment is not accurate. If it can be repeated than the data can prove a very valid point.
Answer:
110 degree
Explanation:
This is because Hybridization of an s orbital with all three p orbitals (px , py, and pz) results in four sp3 hybrid orbitals. sp3 hybrid orbitals are oriented at bond angle of 109.5 degrees from each other. This 109.5 degrees gives an arrangement of tetrahedral geometry
