Hydrogen reacts with an element to form a compound. Which element would have the most valence electrons available to react with hydrogen? oxygen
chlorine
neon
nitrogen

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

Can you post list or organisms