Why are radiometric dating techniques not commonly applied to sedimentary rocks? O A. Sedimentary rocks do not contain radioactive isotopes.
OB. Very few sedimentary rocks contain radioactive uranium.
O C. Most scientists prefer to use index fossils to date sedimentary rocks.
O D. Many sedimentary rocks are made of sediments that came from a variety of locations and formed long before the sedimentary rocks formed.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.