If you need to report the mass of 146 atoms, it is most practical to report that mass in

Here's link to the

cutt.ly/zxt1ipy

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.

the answer is na (sodium)