D is the correct answer.
The trend that follows a group (vertical lines) is that they each contain the same number of valence (outer) electrons
I know 4 is acidic so it has to be 9
Answer: option C, ion-dipole
Explanation:
Since the order of intermolecular forces is as follows
Ion-dipole > Hydrogen bonding> Dipole-dipole> dipole -induced dipole> ion induced dipole> dispersion forces
She will most likely observe that the temperature
does not change during melting because the heat absorbed is used to overcome
intermolecular forces rather than to increase the kinetic energy of the
particles if she measures the temperature of the water in the beaker.