Because their molecules are more tightly packed. Massdensity = ---------- Volume
So more densely packed molecules means more mass per unit volume. Hence metals are denser than non-metals.
Answer:
Chlorine is a very reactive non metals because this element don't form any known chemical compound.
Explanation:
Chlorine atoms have a lot of valance electrons without being complete on its own, so it has a greater need to seek it's conjugates. That's called electronegativity. Halogens are highly reactive because of their electronegativity.
Answer:
Fluorine
Explanation:
It is a non-metal does not conduct electricity
Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet
Red ink since the substance is has a lower viscosity
