Question

if a halogen releases energy when it takes the electron on, which statement is correct. the process is exothermic and the sign of δh is negative. the process is exothermic and the sign of δh is positive. the process is endothermic and the sign of δh is positive. the process is endothermic and the sign of δh is negative.

Explanation:

• An exothermic process is one that releases energy. Since the halogen releases energy when taking on an electron, it is an exothermic process.
• In thermochemistry, for an exothermic reaction, the change in enthalpy ($\Delta H$) is negative because the system is losing heat (energy is released to the surroundings).

Answer:

The process is exothermic and the sign of $\Delta H$ is negative.