Answer:
The answer to your question is: True
Explanation:
Gibbs energy is the energy related to a chemical reaction that can be used to do some work.
Gibbs energy is calculated from a reaction and also the spontaneity can be determined.
In a spontaneous reaction Gibbs energy is always negative.
3 bc Hf is an element hafnium and HF is compound hydrogen flouride
You did not include the list but F is fluorine. The first halogen.
So, you can expect that the other members of the same group (halogens, column 17 of the periodic table) exhibit similar chemical behavior (reactivity).
So, I am sure your list contains one or more of theses elements: Cl (chlorine), Br (bromine), and I (iodine).
All of them you can expect to also be reactive non metal.
Answer:
please the question and options. I think they are missing.