Question

What element has a heat of formation equaling zero?

Α) Η
B) N
C) O
D) F₂
E) None of the above

Answer 1

The element that has a heat of formation equaling zero is none of the above.

Step-by-step explanation:

The element that has a heat of formation equaling zero is E) None of the above. The standard heat of formation (AH) is the enthalpy change associated with the formation of one mole of a compound from its elements in their standard states.

The standard heat of formation of an element in its standard state by definition is equal to zero. The AH =0 for the diatomic elements, H₂ (g), N₂ (g), O₂ (g), F₂ (g), Cl₂ (g), Br₂ (g), and I₂ (g).