Yes. In moderation of course. A medical fact is that you can live for about two weeks without water before you die...but only four days without salt. Totally salt free will produce delirium and hallucinations, muscle weakness, and dehydration. So yes, sodium is good for you.
yes
Yes
yes
yes
yes
yes, it is. ------------------- Sodium chloride is not a catalyst.
Yes Sodium Chlorine is a good insulator because there is not lose electrons to participate in the current flow
Yes, because it has a lone pair .
Yes. It forms sodium positive ions (cations) and negative chloride ions (anions).
any sodium like sodium chloride is good for preservation in meats
in its solid form, no. but dissolved in water, yes.
yes, molten sodium chloride may conduct the electricity but is not a good electrolyte.