Multiple Choice
In terms of the enthalpy of formation, which of the following compounds is the most unstable compared to its elements under standard conditions?
A) KCl(s) , 435.9 kJ/mol
B) PH3(g) , 5.4 kJ/mol
C) Fe3O4(s) , 1,117.1 kJ/mol
D) NiO(s) , 239.7 kJ/mol
E) ICl(g) , 17.8 kJ/mol
Correct Answer:

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Correct Answer:
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