Element Z has two naturally occurring isotopes. The isotope with a mass of 10.012 amu ( 10_(Z) ) has a relative abundance of 19.91%. The isotope with a mass of 11.009 amu ( 11_ (Z) ) has a relative abundance of 80.09%. Calculate the average atomic mass of element Z. Be sure to type your work and round your answer to the correct number of significant figures.​

explanation:

a

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.