non-metals are normally prittle, with one important exception being complex organic compounds like rubber.
Malleable
Neon is a gas and so isn't what we'd generally call malleable except that we can confine it to tubes - usually glass - which may be shaped in certain ways.
Brittleness is usually associated with metalloids.
Gold is extremely malleable.
brittle materials get break when subjected to stress but malleable do not.
Cooper is malleable.
malleable
No, carbon is not malleable. Pick a form, hit with a hammer, and it won't "flatten out" like, say, gold. Carbon in the form of graphite or diamond won't do well when struck.
Brittleness is usually associated with metalloids.
They are not malleable.
Phosphorus is not very malleable as it is a nonmetal
Sulfur is brittle.