Chlorine reacts with sodium and with hydrogen?

I’m assuming you’re doing halogens at GCSE? All halogens react with metals to create salts, both Cl & Na are highly reactive - so this reaction happens quite quickly. Sodium + chlorine → sodium chloride 2Na(s) + Cl2(g) → 2NaCl(s) Also, all halogens react with hydrogen to create hydrogen halides - these are usually gases at room temp, but dissolve into water to create acids. Hydrogen + chlorine → hydrogen chloride H2(g) + Cl2(g) → 2HCl(g) Hope this helped :)