If two atoma are bonded with a bond energy of 212 kJ, what must be done to break the bond?
A 212 kJ of energy must be added,
B. The bond order must be increased,
C. 212 kJ of energy must be taken away,
D No energy should be added or taken away.

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.