periodicity

Question 1

In terms of atomic structure explain why van der waals forces in liquid argon are very weak

Answer 1

argon particles are single atoms with electron closer to the nucleus

cannot easily be polarised to induce van der Waals intermolecular forces
(electron cloud is not easily distorted)

Question 2

1st ionisation energy definition

Answer 2

energy required to remove 1 electron from 1 mol of gaseous atoms