A
3. Which of the following observations could be an indication of a chemical
A reaction of antimony?
It burns in an atmosphere of chlorine.
b It melts at 631°C.
It expands upon freezing.
d It is a solid at room temperature.
с

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.

where are the choice options?