Bases on the table which type of substance has the highest melting point

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.

particle   p is an electron and particle q is a neutron

you need to have a picture of the atom that way we can answer it