An atom is to a molecule as A. a nail is to a hammer
B. A brick is to a house
C. A house cat is to a lion
D. A sentence is to a word.

it is B ^^ have a great day

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.