Fictitious element Fx has two common isotopes. If one of the isotopes has an atomic mass of 358.5 amu and an abundance of 36.90% and its other isotope has a mass of 360.7 amu, what is the average atomic mass of Fx (in amu)? Report the answer to 4 significant figures.

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.