Can someone check my answers? identify the structure as having hydrogen bonding, dipole-dipole moments or london dispersion forces (ldf). h2o nh3, ch4, and co2

H20, water has hydrogen bonding because of the H-O linkage. NH3 is a polar covalent compound and has also hydrogen bonding because of N-H bonding. CH4, methane is a non-polar covalent compound, hence the forces existing is London dispersion force.