If the heat involved in a chemical reaction has a negative sign,
OA) heat is lost to the surroundings.
OB) heat is gained from the surroundings.
OC) no heat is exchanged in the process.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.