The soulustion. turn cloudy due to the precipitation of Sulphur.
Number of protons as stated in the question = 92.
a. 92
Dispersion forces are the only type of intermolecular force operating between non-polar molecules, for example, dispersion forces operate between hydrogen (H2) molecules, chlorine (Cl2) molecules, carbon dioxide (CO2) molecules, nitrogen tetroxide (N2O4) molecules and methane (CH4) molecules.
www.ausetute.com.au/intermof.html
Methane CH4
ethane C2H6
propane C3H8
Butane C4H10
pentane C5H12