Why are Van der Waals forces important?

They are the primary intermolecular attractive forces that act between nonpolar molecules

Explanation:

I took the test

i'm pretty sure its b i might be wrong though!

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.