Which picture shows the particles in a compound? picture I and II

picture I

picture III and IV

picture II

hi <3

compound are 2(or more) elements combined together

thus your answer will be picture I

hope this helps <3

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.